Desktop Metal begins global shipments of Shop System for midvolume Metal 3D printing manufacturing

Desktop Metal’s Binder Jetting System, Designed to Enable Affordable, Batch

Production of High-Quality Metal Parts, Is Now Being Installed

Throughout North America, EMEA and APAC

November 19, 2020 BOSTON, MA – Desktop Metal, a leader in mass production and turnkey additive manufacturing solutions, today announced the Shop System™, the world’s first metal binder jetting system designed for machine shops, is being manufactured in volume and shipped to customers around the world. With installations underway throughout North America, EMEA and APAC, manufacturers such as Jade Creaction LDA in Portugal, Wall Colmonoy Limited in the UK, Cosmind in Italy, Alpha Precision Group in the USA, E.A.C. in France, and Hong Kong Productivity Council (HKPC) in Hong Kong, are leveraging high-quality binder jetting technology to print enduse metal parts in volume and at part costs unattainable with legacy additive
manufacturing processes.

First unveiled last November at the 2019 Formnext trade conference in Frankfurt, Germany, the Shop System is designed to bring metal additive manufacturing to machine and job shops with an affordable, turnkey solution that achieves exceptional surface finish parts with rich feature detail at speeds up to 10 times those of legacy powder bed fusion additive manufacturing (AM) technologies. With the Shop System, users can now print end-use metal parts for use in a variety of industries spanning from
automotive and oil & gas to consumer products and electronics.

“The Shop System offers the most cost-effective, highest resolution mid-volume production solutions in the industry. Its high-speed, single-pass print engine introduces high-quality binder jetting to an entirely new market of machine shops, casting
foundries, and powder metal component suppliers,” said Ric Fulop, CEO and cofounder of Desktop Metal. “With the Shop System, engineers and plant operators can now eliminate many of the constraints previously imposed by traditional manufacturing methods, like CNC machining, and achieve affordable, reliable, and flexible batch production of complex parts.”

Many early adopters of the technology are already realizing the potential for expanding their manufacturing efforts.

Jade Creaction LDA is a leading European company specializing in luxury leather goods, jewelry and watches for several French, Italian and American luxury brands. “Our luxury fashion clients are renowned global brands in the industry, and the Shop System will allow us to quickly respond to their needs with faster production solutions,” said Christophe Pereira, CEO of Jade. “3D printing allows us freedom from multi-stage manufacturing tooling combined with technology innovation that gives our clients’ designers unlimited creative power.”


AFPMA de l’Ain of France is the training center of the UIMM (French metallurgical industries association) of Ain French region, with the mission to provide skills that meet the needs of industrial companies in the Ain region, through initial and continuous training. “AFPMA has invested in metal additive manufacturing technologies from Desktop Metal in order to deliver the best technical training in AM,” said Patrice Mayoral, AFPMA CEO. “The Shop System and the Studio System are two complementary machines that will allow us to train operators and realize demonstrators to show trainees, thanks to real applications, the possibilities of each machine and technology to understand the impact of the design and process parameters on the global value chain. Being among the first adopters allows us to be part of European and French national working groups in order to develop qualification and certification for additive manufacturing and validate the training processes to be aligned with the industry
needs.”


E.A.C., based in France, started its development in 2002 with Swimwear and Lingerie markets. The company is now more focused on the Luxury markets such as leather, cosmetics, packaging, wines & spirits, and jewelry with worldwide clientele. “By enabling mass production of amazingly intricate geometries, metal binder jetting is about to transform the luxury goods space,” said Patrick Chouvet, Manager E.A.C. “As a pioneer in the use of additive manufacturing in luxury goods for some of the world’s most valuable and iconic brands, E.A.C. has been exploring metal Binder Jetting technology over the past four years. After a comprehensive review and benchmarking of the competitive landscape, we chose the Desktop Metal Shop System for its unparalleled print quality, throughput, and affordability.”


Cosmind, based in Italy, is a technologically-advanced company with experience and know-how in the fields of sheet metal processing, metallic carpentry, high precision mechanical processing, sheet metal forming and assembly. “Cosmind is highly focused on technological innovations. Throughout the years, we have constantly introduced the latest production technologies,” said Carmine Donisi, CEO of Cosmind. “We strongly believe that Blinder Jetting 3D printing technology is the natural evolution of the manufacturing sector. In Desktop Metal, we have found all the characteristics of quality and innovation that will certainly allow us to diversify our production.”


Alpha Precision Group, (APG) based in Pennsylvania, is a leading provider of engineered powder metal, metal injection molding (MIM), and machined components with a primary focus on providing products that are consistent with reducing emissions, improving fuel economy, and enhancing engine performance. “APG is extremely excited about the recent purchase of the Shop System because we know that this technology is going to change the way that engineers think, not just from a manufacturing perspective but from a limitless design perspective,” said Phillip McDonald, Advanced Manufacturing Engineer at APG. “This technology enables our customers to iterate designs extremely quickly and prototype products with no tooling costs, all with incredibly short lead times. The future is here.”


Impac Systems Engineering (ISE), a Texas-based professional engineering services firm, has utilized technology, process and people to solve customer engineering challenges. ISE suite of solutions spans from idea, to design, to simulation, to prototyping, fabrication, assembly and production. “For our customers, Impac is a trusted partner, providing a broad suite of engineering and manufacturing solutions across the entire product life cycle,” said Scot Andrews, President of Impac Systems Engineering. “Our 3D printing services play a key role in helping our customers get to market quicker, with better products. With the Shop System, we can scale to hundreds of near-net-shape parts daily — with dramatically reduced labor costs and expanded geometric flexibility relative to traditional methods such as machining and casting.”


VTT Technical Research Center, based in Finland, is a visionary research, development and innovation organization that drives sustainable growth and tackles the biggest global challenges of our time, turning them into opportunities for business growth. “We are excited to work with this new metal Binder Jetting technology that has matured from lab to production,” said Pasi Puukko, Research Team Leader, Advanced Manufacturing at VTT. “We’ll first focus on applications benefitting from this technology, but on the longer run, we are certainly looking also for new material solutions, widening the range of metal AM materials and therefore, better serving our customers’ needs.”


CETIM, the Technical Centre for Mechanical Engineering Industry, is the leading French leader in the fields of mechanical engineering innovation and R&D, and one of the French leaders on metal additive manufacturing development. “3D printing allows CETIM to design parts with new properties and functionalization like thermal behavior, lightening, customization, electrical performances or tribology optimization,” said Pierre Chalandon, Chief Operations Officer for materials, processes and industrialization at CETIM. “Metal binder jetting technology is opening new opportunities — no tooling process, increasing production capacities, decreasing the global cost, and allowing new materials. Desktop Metal technologies, including the new Shop System, completes our additive manufacturing machines park. We chose to be one the first Shop System adopters, because we are convinced it is now possible for metal binder jetting to decrease the global cost, increase the production rate, increase the quality and definition and accuracy, develop new materials and simulate the process — especially sintering — to control the capability and the quality.”

Delivering High-quality Binder Jetting to the Machine Shop Market

The Shop System offers reliable production of serial batches of complex, end-use metal parts in a fraction of the time and cost of conventional manufacturing and comparably priced AM technologies. Featuring the highest resolution and most advanced print engine in the binder jetting market, the Shop System is a complete end-to-end solution that includes a single pass, binder jetting printer; a drying oven for hardening green parts prior to depowdering; a powder station for depowdering parts with built-in powder recycling; Desktop Metal’s furnace designed for accessible, industrial-strength sintering; and integrated powder handling accessories and workflow. This turnkey solution together seamlessly integrates with existing shop operations.

Key Shop System benefits include:

– Easy to use and operate. Designed with the modern machine shop in mind, the Shop System produces parts with excellent surface finish and resolution at the push of a button through its easy-to-use software interface. It features engineered powders and processing parameters optimized for use with the system to deliver exceptional quality and ensure repeatability.
– High productivity. Featuring a high-speed, single pass print carriage, the Shop System produces high-quality, complex metal parts up to 10 times the speed and at a fraction of the cost of legacy PBF additive manufacturing technologies, amplifying customers’ existing output with up to hundreds of end-use metal parts per day. Speeds up to 800 cc/hour at 75-micron layer thickness, enables batches of tens or hundreds of complex printed parts in as little as five hours.
– Superior print quality. Customers can print dense, complex parts with incredibly fine feature detail and surface finishes as low as four-micron roughness average (Ra) out of the furnace due to the Shop System’s highresolution printhead – made possible through droplet sizes as small as 1.2pL, with drop multiplexing up to 6pL.
– Rich feature detail with exceptional surface finish. Achieved through an advanced single pass printhead with 1600 native DPI, the Shop System delivers 400% higher resolution than legacy binder jetting systems. Reliable print quality is supported by the printhead’s 5x nozzle redundancy — 25 percent higher redundancy than comparable binder jetting systems.

Binder Jetting Technology Ushers in Additive Manufacturing 2.0

As a solution for mid-volume parts production through AM, the Shop System is a critical element of the Additive Manufacturing 2.0 revolution that is reshaping the future of manufacturing. As the emergence of AM 2.0 enables throughput, repeatability, and part costs that can compete with conventional manufacturing processes, the additive manufacturing sector is expected to surge from $12 billion in 2019 to an estimated value of $146 billion by the end of the decade1.

“Many of the benefits that have long been touted for 3D printing – mass customization, complex geometries, lightweighting, assembly consolidation, tool-free manufacturing, digital inventories, and more – all come bundled as part of AM 2.0,” said Fulop. “Taken together, this suite of benefits represents a new approach to the way metal parts are being designed, prototyped and now, with the Shop System, manufactured.”

Shop System Availability

With variable build box configurations ranging from 4L, 8L, 12L, and 16L, the Shop System is designed to scale throughput to each shop’s needs. In addition with the Shop System’s end-to-end hardware solution, customers will gain access to Desktop Metal’s Fabricate MFG™ build preparation software, as well as to the Company’s newly-released Live Sinter™ application, a sintering process simulation software that corrects for shrinkage and distortion of binder jet 3D printed parts during sintering, minimizing process trial and error while improving accuracy. For more information on the Shop System, visit

https://www.desktopmetal.com/products/shop

The general availability of the Shop System is another major announcement that follows Desktop Metal’s recent signing of a definitive business combination agreement with Trine Acquisition Corp. (NYSE: TRNE), to accelerate its go-to-market efforts and further drive its relentless efforts in advanced R&D.

 

About Desktop Metal

Desktop Metal, Inc., based in Burlington, Massachusetts, is accelerating the transformation of manufacturing with end-to-end 3D printing solutions. Founded in 2015 by leaders in advanced manufacturing, metallurgy, and robotics, the company is addressing the unmet challenges of speed, cost, and quality to make 3D printing an essential tool for engineers and manufacturers around the world. Desktop Metal was selected as one of the world’s 30 most promising Technology Pioneers by the World Economic Forum; named to MIT Technology Review’s list of 50 Smartest Companies; and recognized among the most important innovations in engineering in Popular Science’s “Best of What’s New.” For more information, visit www.desktopmetal.com.

Press Contacts

Desktop Metal, Inc.
Lynda McKinney, 978-224-1282
Lyndamckinney@desktopmetal.com
(1) Based on Wohlers Report 2020, Wohlers Associates

Please do read the original Press release here, on Desktop Metal’s official website.

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Leveraging DfAM for Enhanced FDM Post-Printing Efficiencies with PostProcess Technologies

CONTENTS

I. Introduction to Design for Additive Manufacturing

II. FDM Background

III. DfAM Strategies

IV. Results

V. Conclusions

I. INTRODUCTION TO DESIGN FOR ADDITIVE MANUFACTURING

Additive manufacturing (AM) is a powerful technology that lends itself to producing organic geometries, and building parts in short timeframes. Additive technologies are capable of printing shapes that cannot be created by any other means. One of the most salient factors in successfully building these unique designs is the utilization of soluble support material.

As is well-known by anyone who has worked with additive technology, 3D-printed end use parts and prototypes do not come off of the printer “customer-ready.” Virtually every printed part, regardless of print technology, requires some sort of post-printing, whether that be support removal, resin removal, surface finish, or all the above.

As the additive production process has been classically categorized into three separate silos; design, build/print, and post-print, the final step is all too often an afterthought. Rather than considering the additive process a linear, sequential one, PostProcess Technologies embraces the ideology that efficiencies and end part results can be dramatically improved when all of the steps are conceptualized as interdependent.This integrated approach is an advanced ideology that will be necessary to scale additive’s impact, and eventually usher in Industry 4.0.

This paper will identify the ways in which designing for additive manufacturing (DfAM) can affect efficiencies, cost, and support material usage in Fused Deposition Modeling (FDM) printing. Print orientation, support settings within the slicing software, and part design are all aspects which can be leveraged to streamline additive workflows, and facilitate faster, more cost-effective post-printing.

It should be noted that while some of these DfAM for FDM techniques can be applied to other print technologies, this is not the case universally (e.g. self-supporting angles are also useful in DfAM for stereolithography (SLA), but not selective laser sintering (SLS) or PolyJet).

As a rule of thumb, DfAM will have a greater effect in circumstances where there is a higher level of design freedom. While DfAM will have a minimal impact on rapid prototyping or tooling applications (situations with the lowest allowance for design freedom) manufacturing aides and end-use production parts allow for more unique designs, thus making DfAM more significant. The more design principles that are considered upfront, the less time must be later allotted to redesign, or the removal of unnecessary support structures later in the process.

 

II. FDM BACKGROUND

To comprehend the DfAM techniques that will streamline an FDM workflow, it is vital to comprehend the advantages and limitations of the print technology, and why it is one of the most popular 3D printing technologies available today. The process starts with a thermoplastic filament wound in spools. This filament could be ABS, Polycarbonate, or Ultem™*, for example (see the image below for a complete list of Stratasys thermoplastic materials available for use with the brand’s FDM printers). Strength requirements, the temperature that the part will be exposed to, its performance expectations, and the sort of chemical resistance that it requires are all factors that may impact material selection.

The filament is extruded through a heater block, then a nozzle, and computer-controlled motion is used to deposit the melted thermoplastic. As the deposited plastic cools, the z-stage build platform is lowered to create the 3D part. While this layer-by-layer deposition process is ideal for parts with low heights, FDM printers can face challenges printing complex geometries with tall and thin walls. Virtually anywhere there is an overhang on an FDM part, support material will likely be required to prevent build failure, leading to high support material usage. Consequently, FDM processes involve tedious support removal steps, which traditionally involve dissolving support material by using detergents or breaking the supports away manually, depending on the support material used.

As reported by the PostProcess Technologies’ 2020 Annual Additive Post-Printing Trends Report, material extrusion printing methods (e.g. FFF, FDM, MEM) are utilized by 71% of additive manufacturing users, making them the most popular print technology. The top challenge of material extrusion technology was found to be the length of time to finish parts, while the runner-up answer was damaged parts, both issues that DfAM can help mitigate. That being said, additional research has found that 23% of the average part cost for polymer 3D printing is attributed to the post-printing step alone (Source: 2019 Wohler’s Report). Finally, keeping support material to a minimum is ideal in lowering the build time required for a part, the material cost of a part, as well as the time and resources which must be allocated to the post-printing step.

III. DFAM STRATEGIES

Orientation
Depending on the geometry of your part, orientation may play a paramount role in DfAM. Usually a sole aspect like part strength, support structures, print speed, or surface quality must be prioritized to determine the best orientation of the part. Strength is most often the driving factor for orientations, though priorities may change depending on print materials used, or time restraints. Considerations regarding part orientation should be explored during the design phase to proactively ensure minimal support material requirements, as well as printing and post-printing speeds.

Figure 1 shows a L-bracket printed on its end and Figure 2 shows the same L-bracket printed flat on its side. Utilizing GrabCAD Print software, the green represents the model material of the part and the orange represents the support material required to print the part in that orientation. This change in build orientation accounted for a 58% reduction in build time, and a 91% reduction in support material usage, equating to cost, material, and time savings.

FIGURE 1: End Orientation
FIGURE 2: Side Orientation

Part Design
Knowing the advantages (and limitations) of a print technology is vital in designing the most efficient, structurally-sound part possible.

Self-Supporting Angles

FDM is one of the only technologies that leverages self-supporting angles. Typically, as long as there is at least a 45° overhang to the build platform, support materials will not be needed. This strategy can also come into play by implementing chamfers and/or fillets, for example see Figures 3 and 4. Also by using the SMART support settings within GrabCAD Print or Insight on Stratasys printers, the software will automatically utilize self-supporting angles when developing support structures, which will help to reduce the amount of support material needed in comparison to other support styles. The actual self supporting angle value will vary based on the printed model material and the slice height that the printer is set at. For example, on a Stratasys Fortus 450mc, loaded with ASA material and printing at a slice height of 0.010” / 0.254 mm will have a self-supporting angle of 43°, whereas Nylon 12CF is 50°.

FIGURE 3: Overhanging Geometry Example
FIGURE 4: Self Supporting Geometry Example

Implementing Strategic Holes
Designing vertical, non-critical holes as diamond or teardrop-shaped instead of round will reduce the amount of support material required (see bearing block image below). Critical diameter holes should be printed in the XY plane if possible. If the vertical holes require tighter accuracy, they may be drilled out in a post-printing step. When using an automated support removal system it is best practice to reduce the amount of blind holes and cavities. Rather, when possible implement through holes and open cavities, allowing the support removal detergent to flow through those areas more freely, and remove support material faster.

Material Usage
In certain circumstances, utilizing model material as support material can decrease build time, specifically by reducing wait time caused by the printer switching between model and support material. However, this time reduction is only realized if the entire layer’s support material can be changed to model. Whenever you slice a part in GrabCAD Print or generate support material in Insight, the software automatically generates support material and will interface directly with the model material, giving it a good foundation to build model material on. When changing the support material to model material, you will want to leave the three or four support material interface layers, or the layers below where the model material starts, as support material. Otherwise, the model support may end up fused to the finished part,
subsequently causing damage to your overall part.


Surface Finishing
Orientation can also impact the surface finish of a part. Exterior contour toolpaths will result in a better surface finish than exposed raster toolpaths, as rasters are more likely to cause air gaps, which can prove difficult to remove. While flat orientations may print faster, particularly with FDM, horizontal orientations with exterior contour paths will take significantly less time to post-print (see example in image below). FDM parts will also always have a “seam”, which is the start/stop point of each build layer. Utilizing the slicing software to determine where a seam should be placed can help reduce surface finishing time on specific part areas.

IV. RESULTS

As a result of implementing the various DfAM techniques that this white paper covers, small-scale FDM parts were able to achieve significant build time and material savings, thus streamlining the entire additive process. Below is a step-by-step explanation of what part features were changed in the CAD modeling software, and what settings were changed in GrabCAD Print to achieve the desired results, reducing build time and support material usage.

Sensor Bracket Part

Part features added:
– Interior and exterior fillets added to increase the strength of the bracket.

GrabCAD Print Settings:
– Orientate the part with the “L” profile in the XY plane of the build platform (see picture below).
Reduce the amount of support material required by selecting “Do not grow supports” in the Support Settings.

Bearing Block Part

Part features added:
– Modified the mounting holes from round to diamond shaped, making the geometry self-supporting.

GrabCAD Print Settings:
-Orientate the part with the diameter of the large vertical hole in the XY plane of the build platform (see picture below).
– To place the layer seams on the back of the part (a noncritical surface) select the surfaces where you don’t want the seam placed (critical surfaces), and select “Avoid Seams” in the Model Setting section. This will help to reduce surface finishing time on critical surfaces. This feature only works for parasolid part files that are imported into GrabCAD Print, and will not work with STL files.

Coupling Part

Part features added:
Changed the angle of the coupling from 35° to 45° to make the geometry self-supporting.
Added a fillet between the base of the part and the vertical cylinder to help strengthen that area.
Added a chamber under the top tabs to make the geometry self-supporting.

GrabCAD Print Settings:
Orientate the part with the round base in the XY plane, as shown below.

Before and After Printing Results
The below picture illustrates the reduction in build time and support material used by making the small design changes and printer setting changes listed above.

Sensor Bracket

Bearing Block

Coupling

Before
Build Time: 2:51
Model: 3.008
Support: 0.658

After
Build Time: 2:25
Model: 3.107
Support: 0.321

Before
Build Time: 5:05
Model: 7.544
Support: 0.742

After
Build Time: 4:18
Model: 7.709
Support: 0.219

Before
Build Time: 4:16
Model: 3.694
Support: 2.092

After
Build Time: 2:47
Model: 3.833
Support: 0.312

Difference
Build Time: -26 minutes
Model: +.01 in³ / +0.25 mm³
Support: -0.34 in³ / -8.64 mm³

Difference
Build Time: -47 minutes
Model: +0.17 in³ / +4.32 mm³
Support: -0.52 in³ / 13.21 mm³

Difference
Build Time: -89 minutes
Model: +0.14 in³ / +3.56 mm³
Support: -1.78 in³ / 45.21 mm³

V. Conclusions

  • To utilize additive to the best of its ability, it is essential to recognize that the design, build, and post-print steps are heavily integrated. It is most strategic to consider support removal and surface finishing during the design phase.
  • When designing an FDM part for optimized post-printing, factoring in material selection, part orientation, self-supporting angles, contour toolpaths, as well as chamfers and fillets as needed, can contribute to time, cost, and materials savings.
  • Automated post-printing solutions from PostProcess Technologies can further enable efficiencies within additive workflows, and cut down on overall time and money spent on the AM process. The proprietary Volumetric Velocity Dispersion technology for soluble support and Suspended Rotational Force for surface finishing both leverage various chemical and mechanical energy sources for optimal post-printing for FDM.

POSTPROCESS TECHNOLOGIES INC.
2495 Main Street, Suite 615
Buffalo NY 14214, USA
+1.866.430.5354


POSTPROCESS TECHNOLOGIES INTERNATIONAL
Les Aqueducs B3, 535 Route des Lucioles
06560 Sophia Antipolis, France
+33 (0)4 22 32 68 13

Please visit PostProcess Technologies for more info and white papers.

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Mimaki Illuminates 3D Printing Market with New Compact Full-Colour UV Inkjet 3D Printer

  • The new Mimaki 3DUJ-2207 3D Inkjet Printer boasts full-colour high definition production in a sleek, compact design, with over 10 million colours

  • The machine delivers an affordable, scalable solution to drive accessibility to 3D printing and deliver its cutting-edge technologies to a host of new customers

Mimaki Europe, in conjunction with Mimaki USA, a leading manufacturer of inkjet printers and cutting systems, today announces the launch of its new compact, full-colour 3DUJ-2207 UV Inkjet 3D Printer. Previously the first to bring over 10 million colours to the 3D printing market with its larger-scale industrial counterpart, the 3DUJ-553, Mimaki now combines the same impressive colour range and renowned build quality in a compact, affordable solution. With this latest offering, Mimaki aims to extend the reach and accessibility of its cutting-edge 3D printing technologies to an entirely new segment of customers.

The innovative 3D printing solution represents a huge step forward for detailing and post-processing, with the unique combination of its full-colour capabilities and water-soluble support materials enabling super-fine details to be printed in vibrant colour, and then beautifully preserved without the substantial breakage risks usually associated with manual cleaning, painting and finishing. With additional features such as Mimaki’s trademark clear resin, which can be utilised alone or mixed with colours to achieve varying levels of transparency, the new 3DUJ-2207 3D printer presents a robust, advanced 3D printing solution with an affordable price tag – all within a machine sufficiently compact to fit in an office elevator.

“Here at Mimaki, we do not stop at developing disruptive technologies – we make it our business to look even further beyond this, continually striving to find ways in which we can then accelerate the adoption of these technologies and drive the wider industry forward,” comments Danna Drion, Senior Marketing Manager at Mimaki Europe. “Our new 3DUJ-2207 3D Printer is a prime example of this. We had already raised the bar in 3D printing by delivering the world’s first 3D printer with over 10 million colours – but now, with the introduction of our new 3DUJ-2207 3D Printer, we are bringing these 10 million colours to a host of new customers, which in turn means new applications and an even quicker uptake of 3D printing technologies as a whole.”

Set to be commercially available worldwide from January 2021, the 3DUJ-2207 has been designed with functionality at its core, with the compact design and reduced 203 x 203 x 76mm build space just two of many key features which demonstrate its unique versatility and make it ideally suited for office environments. The 3D printer’s quiet performance and optional deodoriser minimise some of the primary disruptions usually associated with 3D printing technologies, ensuring maximum workability in busy workspaces.

Utilising UV-curing inkjet technology, the expansive high-definition colour expression made possible with the Mimaki 3DUJ-2207 3D Printer is around twice that of powder bed manufacturing methods. This provides new possibilities for prototyping and enables the accurate reproduction of subtle colour differences which are critical for many industrial design applications such as medical and architectural modelling. Additional applications include small-scale models for design offices and educational settings, as well as collectible figures.

Drion concludes, “By combining our technological expertise with a wealth of industry experience and market insight, we have been able to create an innovative, inspired solution that merges functionality, affordability and design in a way that really will be game-changing for a lot of creators. This launch will deliver a world of new possibilities to designers and product developers, for many of whom the idea of high-definition full-colour 3D printing might previously have been out of reach, and that is something we are extremely proud of.”

The Mimaki 3DUJ-2207 3D Printer will be exhibited online at Formnext Connect and as part of Mimaki’s latest virtual event, the Mimaki 3D Experience, from 10th November to 16th December. Follow Mimaki’s social media channels for more information.

Please do read the original press release here or visit MimakiEurope.com to learn more.

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Envisiontec Speed and Castability: What Factors Affect Final Casting Results?

Over the past few years, 3D printing has been transforming the jewelry industry. The introduction of 3D printers gives jewelers the capability to produce castable, high detailed parts in a fraction of time. But not all 3D printers are created equal, and casting results may vary widely, leaving some custom jewelers and manufacturers frustrated.

Additive manufacturing cuts production time dramatically when compared to traditional hand-carving methods and lately there has been a race for developing faster 3D printers for jewelers to produce rings in a matter of minutes and not hours. But does build speed really matter in 3D printing?  Should you have to sacrifice quality to achieve it?

With a long standing history of 3D printing innovation, EnvisionTEC focuses on real solutions to real application problems. The company introduced its patented Continuous Digital Light Manufacturing (cDLM) technology so that jewelry professionals wouldn’t have to choose between speed and quality.

DLP technology, which was first developed and patented by EnvisionTEC, has been the gold standard for 3D printing jewelry.  A standard DLP 3D printer builds parts in layers, one layer at a time. Each layer must be exposed to the light source and the time of exposure is defined by layer thickness and material reactivity. Once a layer has been exposed, and the specified layer is formed, a layer separation procedure is performed to peel the layer from the bottom of the material tray and replenish fresh resin to cure the next layer.

Over the years, EnvisionTEC has perfected a number of patented methods of minimizing the effects of this peeling separation, with highly castable options available to the jewelry industry that are widely used from custom designers to large manufacturers.  But there are limits to the amount of wax that can be used with DLP 3D printing.

When using wax-based materials, the exposure times are typically three to four times that of regular plastic acrylic polymers. The higher the material castability (i.e. wax content), the slower the exposure time. A number of other 3D printer manufacturers claim that they can produce rings in minutes using a standard layer peeling process. However, their resins contain much more plastic than wax, resulting in less than optimal casts with significant surface roughness and porosity.

EnvisionTEC’s cDLM technology works by adding an air gap (similar to the air gap below the puck on an air hockey table surface) between the part being built and the bottom of the material tray.  By building a floating layer, the separation forces are completely eliminated – so there is no peeling at all.  With no separation forces, cDLM 3D printers are able to print resins with up to a 90% wax fill (Easy Cast 2.0), allowing for patterns that are as easy to cast as any traditional hand-carved or injection molded wax pattern.

On top of all of this, the cDLM process is fast, allowing jewelers unprecedented manufacturing turnaround times. Traditionally, 3D printing castable materials would take hours to build. However with the cDLM technology, bridal and fashion rings can be designed, grown, and ready for investment casting the same day, which is a huge advantage for the jewelry market.

If you need a solution for 3D printing premium quality wax patterns for jewelry quickly that can also be easily casted, view EnvisionTEC’s cDLM technology. For more information visit:  EnvisionTEC Castables.

IT’S SUPER-FAST — CONTINUOUS DIGITAL LIGHT MANUFACTURING

  • Parts built as the platform moves continuously without separation, which leads to a drastic reduction in the building time as well as allowing for highly wax-filled resins to be used.
  • A drastic reduction in separation, forces delivery of highly accurate parts, with detailed feature resolution.
  • Better castability, as the wax based resin is cured twice as much during the build process, when compared to building using non continuous traditional DLP 3D printers. This delivers a porosity-free casting from EnvisionTEC’s ash free castable materials.
  • And more rings printed in Easy Cast 2.0 at 15 µm on the EnvisionTEC Vida UHD cDLM.

3D Printed Jewelry | Precise, Fast & Highly Castable from EnvisionTEC on Vimeo.

EnvisionTEC’s combination of 3D printers and its range of exclusive materials provides Isaac with a real competitive edge. Click here to see a video of Isaac Cohen and others describing why they chose cDLM technology.

Please do read the original article by Team EnvisionTEC here or visit EnvisionTEC.com to learn more.

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Syqe Medical reaps benefits of sustained high temperature parts with XJet Additive Manufacturing

Rehovot, Israel – November 4th, 2020 – XJet Ltd. has revealed today how Syqe Medical, the manufacturer of a revolutionary medical inhaler, is using XJet NanoParticle Jetting™ (NPJ) technology to create parts impossible to produce with other manufacturing methods.

Syqe Medical’s Selective-Dose inhaler aims to increase the effectiveness of patient treatment by delivering a range of drugs in breakthrough precision levels. This new level of precision allows patients to reach the coveted optimum balance between symptom relief and adverse events, and regain their quality of life.

Finding a need to build a high-precision, high-temperature and electrically insulated test facility for product development, Syqe Medical first looked to PEEK materials and traditional manufacturing methods because of the heat resistance requirements. However, according to Syqe Medical Founder and CEO Perry Davidson, design processes were constrained, requiring many adjustments and consequently, production costs were high, delivery times long and yet still the materials were not durable enough.

“Realising we needed another solution, we turned to XJet,” elaborates Itay Kurgan, Product manager at Syqe Medical. “We have a wealth of experience with additive manufacturing technologies and whilst the polymer materials don’t have the heat resistance we needed, XJet ceramic materials are resistant to temperatures even higher than our requirements and of course they are electrically insulated. Minor design adjustments are very easy, and results are precise and repeatable, so we can achieve optimum accuracy and delivery times are very fast. Where all other options were flawed in at least one aspect, XJet provided the perfect solution.”

The XJet Carmel 1400 AM system – featuring the company’s patented NanoParticle Jetting technology – enables the production of ceramic parts with the ease and versatility of inkjet printing. Using ultrafine layers, the Carmel system produces ceramic parts with superfine details, smooth surfaces and high accuracy which are preserved with the use of soluble support material which simply washes away.

“Syqe Medical is making life-changing advancements in the field of patient care so we’re delighted to see them reaping the rewards of XJet’s unique capabilities. Ceramics have some very valuable material properties, but it can be difficult to exploit them due to difficulties in the manufacturing process. XJet delivers all the benefits of ceramic materials, with accuracy and precision, but without the difficulties of traditional manufacturing,” says XJet CBO Dror Danai.

Please do read the official press release here.

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New video with Customer Testimonials for Desktop Metal

Hear from Desktop Metal customers about how they see Additive 2.0 impacting their business. Ford, APG, John Zink and UMC share insights on how additive manufacturing is transforming the way they design and develop parts. “Customized and tailor-printed parts are the future of manufacturing, industry and business as we know it.” “Not being part of this conversation would be a completely missed opportunity.”

Additive Manufacturing 2.0 is poised to launch the next revolution in manufacturing, with benefits that stretch from the factory floor to international supply chains. Explore how Desktop Metal customers say additive manufacturing impacts their business.

Learn more about Desktop Metal and the company’s customers and investors at: https://www.desktopmetal.com/investors

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New Product Launch: DEMI 4000 Resin Removal Solution

PostProcess Technologies has once again revolutionized resin removal for additive manufacturing. Leveraging proven submersion technology, the DEMI 4000™ is the world’s only large scale software-driven 3D post-printing solution for high-volume stereolithography (SLA) production. Read on to learn what sets it apart.

Powered Lift System (Key Benefits – Safety and Ease of Use)

The DEMI 4000’s powered lift system allows for automatic lowering and heightening of tray loads. This ergonomic feature saves floor space and messy bath transfers by eliminating the need for multiple machines, and allows for same-height loading of multiple build trays and consistent, operator-free processing.

Large Processing Tank (Key Benefits – High Volume Production)

Measuring 890mm x 890mm x 635mm, the DEMI 4000’s tank is designed to hold 275 gallons of resin removal chemistry. At this size, the tank can handle heavy loads of parts at one time, effectively increasing throughput and improving cycle times for all part sizes. Additionally, as a fully-enclosed system with a ventilation port, the DEMI 4000 ensures safety for operators and manages the work environment to control fumes and contain resin and detergent.

AUTOMAT3D™ Software Control (Key Benefits – High Volume Production)

AUTOMAT3D™ software takes the guesswork out of post-printing and reduces operator labor time with pre-programmed recipes. The software controls the agitation intensities, temperatures, process times, and more to deliver consistently complete resin removal. AUTOMAT3D optimizes the rate of resin removal with advanced ultrasonics, an advanced  pumping scheme, as well as heat and variable fluid flow. The system was designed with optimal operator ergonomics including multi-touch HMI with glass screen and stainless steel wash-down control buttons and interface panel.

Additive Formulated Chemistry (Key Benefits – Longevity, Cycle Times)

PostProcess offers a comprehensive suite of detergents, each uniquely optimized for post-processing of numerous resins from various manufacturers. This extends to specialized applications such as ceramic-filled resins and high-temp resins.

Our newest generation of detergent was found to have better longevity than all typical solvents (e.g. IPA, TPM, DPM), and an exceedingly safe flashpoint over 200°F / 93°C. This equates to less frequent chemical change-outs, improved environmental friendliness, and compliance with regulatory requirements.

Printer Alignment

For reference, the DEMI 4000 aligns with the following large SLA printers:

  • 3DS ProX 800
    • Max build envelope: 6” x 29.5” x 21.6”  (650mm x 750mm x 550mm)
  • RPS NEO800
    • Max build envelope: 5” x 31.5” x 23.6” (800mm x 800mm x 600mm)
  • SSYS V650
    • Max build envelope: 20” x 20” x 23” (508mm x 508mm x 584mm)

For more info please contact us or visit:  https://www.postprocess.com/

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Desktop Metal to become public, creating the only listed Pure-Play Additive Manufacturing 2.0 Company

  • Desktop Metal is a leader in mass production and turnkey additive manufacturing solutions, offering the fastest metal 3D printing technology in themarket, up to 100x the speed of legacy technologies(1)
  • The additive manufacturing industry is estimated to growfrom $12billionto $146billionthis decadeas it shifts from prototyping to mass production
  • Desktop Metal to become publicly listed through a business combination with Trine (NYSE:TRNE)
  • Combined company to have an estimated post-transaction equity value ofup to$2.5billionand will remain listed onthe NYSE under the ticker symbol “DM” following expected transaction closein the fourth quarter of 2020
  • Transaction to provide up to $575millionin gross proceeds, comprised ofTrine’s $300millionof cash held in trust (assuming no redemptions) and a $275M fullycommitted common stock PIPE at $10.00 per share, including investments from Miller Value Partners, XN, Baron Capital Group, Chamath Palihapitiya, JB Straubel, and HPS Investment Partners
  • Leo Hindery, Jr., legendary technology investor and operator, to join Desktop Metal’s board
  • All significant Desktop Metal shareholders including, Lux Capital, NEA, Kleiner Perkins, Ford Motor Company, GV (formerly Google Ventures), and Koch Disruptive Technologies will retain their equity holdings through Desktop Metal’s transition into the publiclylisted company

BOSTON, MA (August 26, 2020)–Desktop Metal, Inc. (“Desktop Metal” or the “Company”) a leader in mass production and turnkey additive manufacturing solutions, announced today it will become a publicly listed company in order to accelerate its growth trajectory within the rapidly growing additive manufacturing market and capitalize on the strong secular tailwinds supporting the reshoring of manufacturing and supply chain flexibility. The Company has signed a definitive business combination agreement with Trine Acquisition Corp. (NYSE:TRNE), a special purpose acquisition company led by Leo Hindery, Jr., and HPS Investment Partners, a global credit investment firm with over $60 billion in assets under management.Upon closing of the transaction, the combined operating company will be named Desktop Metal,Inc. and will continue to be listed on the New York Stock Exchange and trade under the ticker symbol “DM.”

The additive manufacturing industry grew at a 20 percent annual compound rate between 2006 and 2016 before accelerating to 25 percent compound annual growth over the last 3years, a rate that is expected to continue over the next decade as the market surges from $12 billion in 2019 to an estimated $146 billion in 2030. This market inflection is being driven by a shift in applications from design prototyping and tooling to mass production of end-use parts, enabled by the emergence of what Desktop Metal refers to as “Additive Manufacturing 2.0,” a wave of next-generation additive manufacturing technologies that unlock throughput, repeatability, and competitive part costs. These solutions feature key innovations across printers, materials, and software and pull additive manufacturing into direct competition with conventional processes used to manufacture $12 trillion in goods annually.

Desktop Metal’s cash on hand after giving effect to the transaction will enable the Company to capitalize on its position at the forefront of Additive Manufacturing 2.0 by accelerating the Company’s rapid growth and product development efforts. The Company will also use the proceeds to support constructive consolidation in the additive manufacturing industry.

Led by an experienced team with deep operational and scientific pedigree, Desktop Metal has distribution in more than 60 countries around the world and broad adoption from leading companies spanning array of industries,including automotive, consumer products, industrial automation, medical devices, and aerospace & defense.

Desktop Metal is ready to rapidly deploy its full suite of additive manufacturing solutions to existing and new customers on a global basis. The Company’s broad product portfolio includes the Studio System™, an office-friendly metal 3D printing system for low volume production, which has been shipping in volume for more than a year, as well as the new Shop System™ for mid-volume manufacturing and its continuous fiber composite printer, Fiber™, both of which are expected to ship in the fourth quarter of 2020. The Company’s Production System™, which has begun shipping to early customers and is expected to ship in volume in the second half of 2021, is designed to be the fastest way to 3D print metal parts at-scale, achieving print speeds up to 100x faster than legacy technologies and delivering thousands of parts per day at costs competitive with traditional manufacturing.

“We are at a major inflection point in the adoption of additive manufacturing, and Desktop Metal is leading the way in this transformation,” said Co-founder, Chairman & Chief Executive Officer of Desktop Metal, Ric Fulop. “Our solutions are designed for both massive throughput and ease of use, enabling organizations of all sizes to make parts faster, more cost effectively, and with higher levels of complexity and sustainability than ever before. We are energized to make our debut as a publicly traded company and begin our partnership with Trine, which will provide the resources to accelerate our go-to-market efforts and enhance our relentless efforts in R&D.”

Leo Hindery, Jr., Chairman & Chief Executive Officer of TRNE added, “After evaluating more than 100 companies, we identified Desktop Metal as the most unique and compelling opportunity, a company that we believe is primed to be the leader in a rapidly growing industry thanks to their substantial technology moat, deep customer relationships across diverse end-markets, and impressive, recurring unit economics. Ric has put together an exceptional team and board of directors with whom we are excited to partner to create the only publicly traded pure-play Additive Manufacturing 2.0 company.”

 Tom Wasserman, Director of TRNE and Managing Director of HPS Investment Partners added, “We are thrilled to partner with Ric and Desktop Metal to help the Company achieve its goals and capture the massive Additive Manufacturing 2.0 opportunity. Thanks to its tremendous team, we believe Desktop Metal has incredible potential for future growth, which will only be accelerated by the extensive financial resources provided by this transaction.”

Transaction Overview

Pursuant to the transaction, TRNE, which currently holds $300 million in cash in trust, will combine with Desktop Metal at an estimated $2.5billion pro forma equity value. Assuming no redemptions by TRNE’s existing public stockholders, Desktop Metal’s existing shareholders will hold approximately 74percent of the issued and outstanding shares of common stock immediately following the closing of the business combination.

Cash proceeds in connection with the transaction will be funded through a combination of TRNE’s cash in trust and a$275millionfully committed common stock PIPE at $10.00 per share, including investments from funds and affiliates of Miller Value Partners, XN, Baron Capital Group, Chamath Palihapitiya, JB Straubel, and HPS Investment Partners.

The boards of directors of both Desktop Metal and TRNE have unanimously approved the proposed transaction. Completion of the proposed transaction is subject to approval of Trine and Desktop Metal stockholders and other closing conditions, including a registration statement being declared effective by the Securities and Exchange Commission, and is expected to be completed in the fourth quarter of 2020.

Additional information about the proposed transaction, including a copy of the merger agreement and investor presentation, will be provided in a Current Report on Form 8-K to be filed by TRNE today with the Securities and Exchange Commission and available at www.sec.gov.

Advisors

Credit Suisse is serving as the exclusive capital markets advisor to Desktop Metal and as sole private placement agent to TRNE. BTIG, LLCis serving as financial and capital markets advisor to TRNE. Latham & Watkins LLP is serving as legal advisor to Desktop Metal, and Paul,Weiss, Rifkind, Wharton & Garrison LLPis serving as legal advisor to TRNE. ICR is serving as investor relations and communications advisor to Desktop Metal.

Investor Conference Call

Desktop Metal and TRNE will host a joint investor conference call to discuss the business and the proposed transaction today, August 26, 2020, at 8:00 AM ET. To listen to the conference call via telephone, dial 1-877-407-4018 or 1-201-689-8471 (international callers/U.S. toll) and enter the conference ID number 13708990. To listen to the webcast, please click here. A replay of the call will be accessible at the webcast link.

For Desktop Metal investor relations website,visit www.desktopmetal.com/investors.

About Desktop Metal

Desktop Metal, Inc., based in Burlington, Massachusetts, is accelerating the transformation of manufacturing with an expansive portfolio of 3D printing solutions, from rapid prototyping to mass production. Founded in 2015 by leaders in advanced manufacturing, metallurgy, and robotics, the company is addressing the unmet challenges of speed, cost, and quality to make Additive Manufacturing an essential tool for engineers and manufacturers around the world. Desktop Metal was selected as one of the world’s 30 most promising Technology Pioneers by the World Economic Forum and named to MIT Technology Review’s list of 50 Smartest Companies.

For more information, visit www.desktopmetal.com.

About Trine Acquisition Corp

Trine Acquisition Corp is a blank check company organized for the purpose of effecting a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization, or other similar business combination with one or more businesses or entities.

For more information, visit www.trineacquisitioncorp.com.

Forward Looking Statements

This document contains certain forward-looking statements within the meaning of the federal securities laws with respect to the proposed transaction between Desktop Metal, Inc. (“Desktop”) and Trine Acquisition Corp. (“Trine”), including statements regarding the benefits of the transaction, the anticipated timing of the transaction, the services offered by Desktop and the markets in which it operates, and Desktop’s projected future results. These forward-looking statements generally are identified by the words “believe,” “project,” “expect,” “anticipate,” “estimate,” “intend,” “strategy,” “future,” “opportunity,” “plan,” “may,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result,” and similar expressions. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this document, including but not limited to: (i) the risk that the transaction may not be completed in a timely manner or at all, which may adversely affect the price of Trine’s securities, (ii) the risk that the transaction may not be completed by Trine’s business combination deadline and the potential failure to obtain an extension of the business combination deadline if sought by Trine, (iii) the failure to satisfy the conditions to the consummation of the transaction, including the adoption of the agreement and plan of merger by the shareholders of Trine and Desktop, the satisfaction of the minimum trust account amount following redemptions by Trine’s public shareholders and the receipt of certain governmental and regulatory approvals, (iv) the lack of a third party valuation in determining whether or not to pursue the proposed transaction, (v) the occurrence of any event, change or other circumstance that could give rise to the termination of the agreement and plan of merger, (vi) the effect of the announcement or pendency of the transaction on Desktop’sbusiness relationships, performance, and business generally, (vii) risks that the proposed transaction disrupts current plans of Desktop and potential difficulties in Desktop employee retention as a result of the proposed transaction, (viii) the outcome of any legal proceedings that may be instituted against Desktop or against Trine related to the agreement and plan of merger or the proposed transaction, (ix) the ability to maintain the listing of Trine’s securities on the New York Stock Exchange, (x) the price of Trine’s securities may be volatile due to a variety of factors, including changes in the competitive and highly regulated industries in which Desktop plans to operate, variations in performance across competitors, changes in laws and regulations affecting Desktop’s business and changes in the combined capital structure, (xi) the ability to implement business plans, forecasts, and other expectations after the completion of the proposed transaction, and identify and realize additional opportunities, and (xii) the risk of downturns in the highly competitive additive manufacturing industry. The foregoing list of factors is not exhaustive. You should carefully consider the foregoing factors and the other risks and uncertainties described in the “Risk Factors” section of Trine’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, the registration statement on Form S-4 and proxy statement/consent solicitation statement/prospectus discussed below and other documents filed by Trine from time to time with the U.S. Securities and Exchange Commission (the “SEC”). These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements.Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and Desktop and Trine assume no obligation and do not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise. Neither Desktop nor Trine gives any assurance that either Desktop or Trine will achieve its expectations.

Additional Information and Where to Find It

This document relates to a proposed transaction between Desktop and Trine. This document does not constitute an offer to sell or exchange, or the solicitation of an offer to buy or exchange, any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, sale or exchange would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. Trine intends to file a registration statement on Form S-4 that will include a proxy statement of Trine, a consent solicitation statement of Desktop and a prospectus of Trine. The proxy statement/consent solicitation statement/prospectus will be sent to all Trine and Desktop stockholders. Trine also will file other documents regarding the proposed transaction with the SEC. Before making any voting decision, investors and security holders of Trine and Desktop are urged to read the registration statement, the proxy statement/consent solicitation statement/prospectus and all other relevant documents filed or that will be filed with the SEC in connection with the proposed transaction as they become available because they will contain important information about the proposed transaction.

Investors and security holders will be able to obtain free copies of the proxy statement/consent solicitation statement/prospectus and all other relevant documents filed or that will be filed with the SEC by Trine through the website maintained by the SEC at www.sec.gov. In addition, the documents filed by Trine may be obtained free of charge from Trine’s website at www.trineacquisitioncorp.com or by written request to Trine at Trine Acquisition Corp., 405 Lexington Avenue, 48th Floor, New York, NY 10174.

Participants in the Solicitation

Trine and Desktop and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from Trine’s stockholders in connection with the proposed transaction. Additional information regarding the interests of those persons and other persons who may be deemed participants in the proposed transaction may be obtained by reading the proxy statement/consent solicitation statement/prospectus regarding the proposed transaction. You may obtain a free copy of these documents as described in the preceding paragraph.

Press Contacts

For Desktop Metal Investor / Media Relations

Lynda McKinney

press@desktopmetal.com

Investor Relations

Mike Callahan / Tom Cook

DesktopMetalIR@icrinc.com

For Trine Acquisition Corp.

Pierre Henry

phenry@trineacquisitioncorp.com

For HPS Investment Partners

Prosek Partners

Mike Geller / Josh Clarkson

mgeller@prosek.com / jclarkson@prosek.com

# # #

(1)Based on published speeds of binder jetting and laser powder bed fusion systems comparable to the Production System™ available as of August 25, 2020and using comparable materials and processing parameters.

Please do read and download the original Press Release by Desktop Metal here.

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Desktop Metal receives multi-million dollar award to mass produce cobalt-free hardmetal parts

Metal 3D printing company Desktop Metal has been awarded a three-year $2.45 million dollar project from the U.S. Department of Defense (DoD) to develop a high-volume 3D printing process for the mass production of Cobalt-free hardmetals.

Desktop Metal’s proprietary Single Pass Jetting (SPJ) technology will be used to mass manufacture the cobalt-free hardmetal parts, made from a novel, iron-based nano material, at a rate of 200,000 parts from a single machine, per day.

“The novel Co-free hardmetal grade is expected to yield a high strength, high toughness, high hardness, and high wear resistance material,” said Dr. Nicholas Ku, materials engineer at CCDC Army Research Laboratory (ARL). “We believe combining this novel material with Desktop Metal’s Single Pass Jetting technology will have major applications not only in the defense sector but also in the commercial sector.

“Further, we believe this combined method will dramatically improve sustainability, reduce the use of a conflict mineral and provide an environmentally-friendly process to mass produce parts with superior properties.”

Desktop Metal’s SPJ technology 

The Desktop Metal Production System is a large scale machine which utilizes SPJ technology – an inkjet and powder-based method of metal 3D printing. In comparison to conventional binder jetting methods, which use multiple carriages and pass over a build box to print each layer, Desktop Metal’s patent-pending bi-directional SPJ technology consolidates these steps into the motion of a single print carriage. This significantly reduces print time and removes unnecessary steps to increase the Production System’s mechanical efficiency.

In fact, the company claims the Production System can achieve print speeds up to 100 times those of legacy powder bed fusion 3D printing technologies.

Chicago-based advanced digital manufacturing company Fast Radius was one of the first companies to receive Desktop Metal’s Production System in 2019, as it looked to further expand its global metal additive capabilities. Shortly after, Ford Motors also integrated the Production System to accelerate prototyping and manufacture limited scale production parts, after leading a $65 million investment round for the firm.

Most recently, Desktop Metal merged with blank check company Trine Acquisition Corp to go public with its 3D printing business, a move which will see it listed on the NYSE with an estimated equity value of $2.5 billion. Following the announcement, 3D Printing Industry investigated what this transaction could mean for the wider additive manufacturing industry.

The Desktop Metal Production System, equipped with SPJ technology. Image via Desktop Metal.

Mass manufacturing cobalt-free hardmetals

Cobalt is a naturally occurring element typically used as a metallic binder material for cemented tungsten carbide. While a critical component in items such as lithium-ion rechargeable batteries, Cobalt has also been linked with negative respiratory and dermal side effects, particularly to those who are mining it. The mining of Cobalt also poses environmental issues, such as increased radioactivity levels and polluted rivers and drinking water.

The ARL has therefore been investigating a replacement for Cobalt, culminating in the development of a patented cobalt-free hardmetal material that uses a novel iron-based nano material as its matrix.

Once the material had been developed, the U.S. Army Contracting Command tasked Desktop Metal with providing a cost-effective, high volume process able to print the novel hardmetals, on behalf of U.S. Army Research Laboratory to the National Center for Manufacturing Sciences (NCMS) and the Advanced Manufacturing, Materials and Processes (AMMP) consortium.

During the project, Desktop Metal will develop a feedstock and binder system for the cobalt-free hardmetal. Without the use of tooling, the firm’s SPJ process will print the novel hardmetals into complex, net, or near-net shaped parts. The goal of the project is to print at least 200,000 parts per day from a single machine.

Desktop Metal will also deliver a cost analysis to step up its SPJ technology for the manufacture of at least 500,000 prototype parts. The company believes its SJP process will “lead the development” of a dual-use technology suitable to various commercial and DoD applications.

Desktop Metal’s decision to go public could raise it $575 million in additional funding. Image via Desktop Metal.

The carbide hardmetals sector

According to Desktop Metal, the carbide hardmetals market is projected to grow to $24 billion by 2024. Carbide hardmetals are used in multiple dual use applications spanning sectors including oil and gas, chemical and textile, agricultural tools, aerospace, defense, construction, and more.

Dr. Animesh Bose, vice president of Special Projects at Desktop Metal, will serve as principal investigator of the three-year project. A fellow of ASM International and APMI International, Bose has amassed 40 years’ experience in processing particulate materials.

“The success in this project will not only provide the hardmetal community with their eagerly desired Co-free hardmetal solution, but also result in the development of a tool-free processing technique capable of fabricating this class of materials into extremely complex shaped parts at speeds that can rival most other high-volume manufacturing techniques, opening op new horizons in the area of hardmetals and its applications,” he said.

It’s expected by the relevant parties that this project will aid in providing a more environmentally friendly way to mass produce metals, alloys, and other composite parts for both DoD and commercial applications.

Dr Animesh Bose will serve as principal investigator of the three-year project. Image via Desktop Metal.

Please do read the original article by Hayley Everett here.

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Application Note: Chemistry Advancements for Automated Resin Removal: PLM-403-SUB

CONTENTS

I. Summary
II. Testing & Validation of SLA Resin Removal Solution
III. Conclusion

I. SUMMARY
This paper examines PostProcess Technologies’ newly released resin removal chemistry, PLM-403-SUB (referred to as 403 from here on), as part of its comprehensive Automated Resin Removal Solution. It will review the effectiveness across a range of materials, safe operations, and process optimizations as compared to traditional alternatives isopropyl alcohol (IPA) and tripropylene glycol monomethyl ether (TPM).

The goal of the new 403 chemistry is to, in concert with the software and hardware components of the resin removal solution, ease the multiple burdens that typically arise when removing uncured resin following various Vat Photopolymerization processes. With this solution, users can dramatically reduce cycle times, process steps, and the typical operational risk factors that come with legacy resin removing solvents.

II. TESTING & VALIDATION
The PostProcess 403 chemistry is a new formulation that improves upon the performance of the previously released PLM-402 SUB (referred to as 402 from here on). The primary benefits of the solution are the same as those identified previously with the 402 detergent, including industry-leading cycle times and reduction of required process steps. Unlike previous methods which may have required both TPM and dirty IPA baths followed by various rinse steps, cycle times with 403 in PostProcess’s patented hardware technology are frequently less than 10 minutes. Additionally, the process takes place within just one piece of equipment. This effectively cuts down on both attended and unattended process time. The user can simply load and unload from the system, and perform a quick rinse before moving to the post-cure step. This is compared to cycle times of 20+ minutes in multiple TPM/IPA baths which involve operator intervention throughout the cycle to move from one step to the next.

The 403 chemistry has been successfully used to remove uncured resin from the model materials listed in Table 1 (as of publication date noted in the footer). Ongoing validation tests for additional resins are being conducted with the intention of covering the vast majority of resins available, and will be updated periodically in this document available on the
PostProcess website.

One of the most important factors for users, after ability to clean parts, is the detergent life, or longevity. This typically determines the frequency of labor-intensive equipment cleaning efforts. Longevity for resin removal detergent is typically defined as the amount by weight that the chemical solution can hold and still effectively remove resin. As most users look to remove resin as quickly as possible, the longevity of various solvents are compared while holding 10 minute cycle times. From the data depicted in Figure 1 and in Table 2, 403 has significantly better longevity (capacity by weight of resin in solution at 10 minutes) than all other typical solvents (i.e., IPA, DPM, TPM) used to remove uncured resin from printed parts. Likewise, 403 has 6% improved longevity versus PostProcess’s previously released industry- leading chemistry, 402.

Figure 1: Saturation of various chemical solvents for resin removal

The saturation of the 403 chemistry with removed resin can be measured using the hydrometer (see Figure 2 and Table 3 below), which is provided with every PostProcess Automated Resin Removal Solution.

FIGURE 2: Hydrometer

WASTE CONSIDERATIONS
Due to its increased longevity, 403 offers a significant reduction in waste generation compared to other solvents. Subsequently, the lower frequency of chemistry changeouts reduces the required maintenance labor hours in the process.

The detergents used in the resin removal process will also contain the uncured resins in solution. These resins do not become less hazardous after removal, and are all considered hazardous materials in the chemicals used to remove them. The frequency and volume of waste disposal will be a factor in the total cost to dispose of the exhausted chemicals.

MECHANICAL PROPERTIES OF SLA PARTS AFTER RESIN REMOVAL
An initial set of tensile testing has been conducted to show mechanical property integrity compared to existing solvent cleaning methods. Accura ClearVue, Accura 60, and Accura Extreme Grey were all subjected to a resin removal process using 403 and IPA, along with a control group in which the uncured resin was carefully wiped off. Following these procedures, all tensile bars underwent a curing step according to manufacturer recommendations. Key properties have been compared below.

As shown above, tensile strength at yield is within 5% of the control group for both 403 and IPA processed parts. Values for tensile at break are also nearly identical for 403 and IPA. While elongation varies slightly, it still lies within the manufacturer specifications (3-15% for ClearVue, 5-13% for 60, and 14-22% for Extreme Grey) for both 403 and IPA. In summary, when moving from an IPA cleaning process to the PostProcess solution utilizing the 403 chemistry, mechanical properties will not be significantly affected.

SAFETY CONSIDERATIONS
Inhalation and combustion risks during the resin removal process are a widespread concern for all resin removal users. Additionally, regulations can significantly limit the amount of combustible resin removal liquids that can be stored on site in a facility. The 403 chemistry has improved safety and environmental characteristics that address these issues, as seen in Table 5 below.

The high flash point of 403 (220°F, 104.4°C) means far less vapor will end up in the air near the machine, especially when compared to a volatile solvent like IPA. With typical process temperatures ranging from ambient temperatures (75 – 85°F, 23.9 – 29.4°C) up to 120 – 130°F (48.9 – 54.4°C) for the PostProcess Resin Removal Solution, there is still a very large gap before reaching the ¼ LEL temperature of 163°F (72.8°C).

STORAGE
For higher volume resin removal, where large volumes of chemical are required to remove the resin, 403 addresses storage limitation issues with flammable liquids.

The amount of flammable/combustible resin removal liquids that can be kept on-site is limited by various regulations. Liquids with a flashpoint below 200°F (93.3°C) are usually limited to 120 gallons (454 L). Conversely, liquids with a flashpoint greater than 200°F (93.3°C) can usually be stored in quantities up to 13,200 gallons (5000 dekaliters). Because 403 has a flashpoint of 220°F (104.4°C), it can operate and be stored in much larger quantities than other resin removal chemistries, as summarized in Table 6. Table 6 is specific to the United States. Please refer to your local regulations when outside of the US.

ENVIRONMENTAL & SUSTAINABILITY
The new 403 chemistry is an environmentally-friendly alternative. It has a much lower vapor pressure than other solvents, and a 220°F (104.4°C) flashpoint that makes it much safer to use. In 402, D-limonene was used to help with resin removal. Although generally safe to use, it has been replaced in 403 with a more environmentally-friendly option that reduces risks following the waste removal step.

Once saturated with resin, 403 can be recovered for reuse by distillation. Under a typical vacuum distillation, up to 90%+ of 403 by saturation weight (amount of resin in solution) can be recovered for reuse of the detergent. This makes 403 a particularly sustainable option.

With reduced waste generation, lower vapor pressure, and higher flashpoint than any other option on the market, the 403 chemistry is the most sustainability-friendly solution available.

III. CONCLUSION
PostProcess Technologies’ new 403 chemistry as a part of its comprehensive Automated Resin Removal Solution is a definitive improvement over current mechanical and chemical technologies used to remove resin in Vat Photopolymerization 3D post printing. Through a combination of breakthrough chemistry, patented hardware technology, and proprietary software, uncured resin removal can be accomplished in 10 minutes or less for simultaneous trays of printed parts. This newest formulation offers a much higher resin capacity, yielding a longer useful life compared to other chemical methods. With intuitive software controls and process monitoring, the speed and ease of use of the solution results in increased consistency at levels required for production volumes. Ultimately, the attended operator time is greatly reduced and the 403 chemistry is inherently safer to use and store.

Can you benefit from optimizing your SLA resin removal process?
Request a benchmark here.

POSTPROCESS TECHNOLOGIES INC.
2495 Main Street, Suite 615
Buffalo NY 14214, USA
+1.866.430.5354


POSTPROCESS TECHNOLOGIES INTERNATIONAL
Les Aqueducs B3, 535 Route des Lucioles
06560 Sophia Antipolis, France
+33 (0)4 22 32 68 13

info@postprocess.com
www.postprocess.com

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