DSM Somos

From thermoplastic elastomers to polyethylene, polypropylene and ABS. In partnership with DSM Somos®, RPS can provide the most technically advanced stereolithography (SL) resins for all SLA® platforms for all applications.

For further information and technical support in helping to select a stereolithography product, or to discuss a material upgrade, please contact us at RPS.


Somos® Taurus

Expand your capabilities
By using Somos® Taurus to print your parts, you get the added value of excellent surface quality and isotropy, enabling reduced job times for highly detailed parts with more uniform performance. Somos® Taurus brings the combination of thermal and mechanical performance that until now has only been achieved using thermoplastic 3D printing techniques such as FDM and SLS. Parts printed with this material are easy to clean and finish. The higher heat deflection temperature of this material increases the number of applications for the part producer and user. The darker colour of Somos® Taurus also gives an added richness to your parts to minimise part finishing and painting, making it a great choice for the automotive and aerospace industries.

Key benefits for 3D printing 

  • Superior strength and durability
  • Wide range of applications
  • Excellent surface and large part accuracy
  • Heat tolerance up to 90°C
  • Thermoplastic-like performance, look and feel

Somos® Element

Antimony-free for investment casting
Somos® Element is a new antimony-free stereolithography material that has been specifically created to improve the repeatability and quality of 3D printed casting patterns. Patterns created with Somos® Element have strong green strength, are dimensionally stable during storage and leave a minimal amount of ash residue after burnout. Any residue that is left behind is easily removed, leaving a perfectly clean void in the ceramic mould that translates into less mould prep and lower rates of rework saving customers time and money.

Key benefits for 3D printing 

  • Very clean burnout with low residual ash
  • Low viscosity
  • Dimensionally stable

Somos® EvoLVe 128

Durability with fast processing 
Somos® EvoLVe 128 is a durable stereolithography material that produces accurate, highly detailed parts and has been designed for easy finishing. It has a look and feel that is almost indistinguishable from finished traditional thermoplastics, making it perfect for building parts and prototypes for functional testing applications – resulting in time, money and material savings during product development. Ideal applications include tough, functional prototypes, snap-fit designs and jigs & fixtures.

Key benefits for 3D printing 

  • Easy to clean & finish
  • High strength & durability
  • Accurate & dimensionally stable
  • High detail

Somos® PerFORM

Increased performance
Somos® PerFORM produces strong, stiff, high temperature-resistant composite parts that are ideal for rapid tooling and wind tunnel testing applications. With the lowest viscosity of any composite stereolithography material, parts made from Somos® PerFORM are faster to build, easier to post-process clean, possess superior sidewall quality and provide unmatched detail resolution. With its excellent high heat tolerance, outstanding detail resolution and stiffness, Somos® PerFORM is the ideal material for applications including high temperature testing, electrical casings and automotive housings.

Key benefits for 3D printing 

  • Excellent detail resolution
  • Faster, easier processing & finishing
  • Superior high heat tolerance
  • Expanded applications

Somos® PerFORM Reflect

Somos PerFORM Reflect utilizes patented new technology that allows for reducing and even eliminating much of the finishing work required with traditional materials.

Somos PerFORM Reflect produces strong, stiff, high-temperature resistant composite parts that are ideal for wind tunnel testing. Extensive tests show that the new Somos PerFORM Reflect reduces post-processing by more than 30% as it eliminates the need for additional PIV coatings. This translates into faster data collection, decreasing overall lead time per design iteration and allowing customers to conduct iterations faster.

Key benefits for 3D printing 

  • Ready-to-use material for PIV wind tunnel testing
  • Faster image processing, higher accuracy wind tunnel models
  • >30% reduction in post-processing time
  • Excellent detail resolution
  • Improved surface quality, faster part finishing
  • Superior high heat properties

Somos® WaterShed XC 11122

The difference is clear
Somos® WaterShed XC 11122 is the clear solution for designers looking for ABS and PBT-like properties for stereolithography technology. One of our most popular resins, Somos® WaterShed XC 11122 produces highly detailed parts with superior clarity and water-resistance. The durable, optically clear parts it creates have a smooth finish to help you accelerate your testing time. The look and feel is so similar to an engineered plastic, you might not be able to tell the difference. Whatever your application, you’ll find Somos® WaterShed XC 11122 simple to use and finish. With exceptional clarity and high water resistance, you can easily complete fluid flow analysis with this material. It’s also durable enough to withstand intense wind tunnel testing, making it an ideal choice for the automotive and aerospace industries.

Key benefits for 3D printing 

  • Easy to use and finish
  • Superior moisture resistance
  • Exceptional clarity

Somos® NeXt

The best of both worlds
Somos® NeXt helps you take product design to truly new heights, with a look and feel almost indistinguishable from finished traditional thermoplastics but with a toughness, durability and accuracy not traditionally seen in SLA materials. By using this unique SLA material, our customers produce a range of functional testing applications and low-volume prototypes that save significant amounts of time, money and materials. Somos® NeXt helps our customers produce tougher prototype parts than those made with standard SL resins. Our solution is especially ideal for functional end-use performance prototypes including snap-fit designs, impellers, duct work, connectors and electronic covers, automotive housings and dashboard assemblies, packaging and sporting goods – including lacrosse sticks (see below). Industry segments we serve with this solution include aerospace, automotive, consumer products and electronics.

“This is unlike anything we’ve seen before from stereolithography…DSM has delivered a resin that truly looks, feels and performs like a thermoplastic. We were amazed.” So says Tom Burns, product manager at Warrior Sports.

The leading American sports equipment supplier specializing in ice hockey and lacrosse wanted to find a smarter way to prototype a new lacrosse stick head. Enter its SL supplier, Eagle Design & Technology Inc, who suggested they try Somos NeXt.

The prototype was truly put through its paces, from wind tunnel testing to having lacrosse players shoot the hard rubber ball at speeds of up to 90mph. “We were able to simulate in-game scenarios of repetitive throwing and catching at high speeds, where the prototype performed almost like a production head,” said Burns.

Proof positive that Somos® NeXt is a game-changer. Literally…

Key benefits for 3D printing 

  • Superior strength and durability
  • Exceptionally versatile
  • Thermoplastic-like performance, look and feel

Somos® WaterClear Ultra 10122

Seeing things clearly
Imagine the freedom to quickly and accurately prototype your new design using stereolithography. It’s now possible using Somos® WaterClear Ultra 10122—a fast, low-viscosity material that produces accurate, functional parts that simulate an acrylic appearance with minimised finishing. Somos® WaterClear Ultra is ideal for applications that require optical clarity – for example, fluid flow analysis, master patterns and concept and functional models.. Meanwhile, where lenses need to be thicker, this material provides refractive values similar to engineered plastics for functional testing in optical light transmission work. You’ll clearly see the difference this material makes to your next design project.

Key benefits for 3D printing 

  • Extraordinary optical clarity
  • Superior moisture resistance
  • Easy to use and finish

Somos® GP Plus 14122

The universal resin
Somos® GP Plus 14122 is a low-viscosity stereolithography material with an opaque white appearance. This material mirrors production plastics like ABS and PBT, making it an ideal choice for virtually any application. Recognised for its durability and accuracy, as well as water and humidity resistance, Somos® GP Plus 14122 is a sought-after material among designers in the automotive, aerospace and consumer product industries. This material is ideal for functional prototypes, concept models and low volume production parts.

Key benefits for 3D printing 

  • Extremely accurate
  • Excellent humidity resistance
  • Very durable

Somos® ProtoTherm

Turn up the heat
For the automotive and aerospace sectors, our Somos® ProtoTherm materials deliver high temperature resistance with exceptional surface finishing — a perfect combination for simplifying wind tunnel trials. This material also offers superior dimensional stability, making your parts robust for testing.

Key benefits for 3D printing 

  • Extremely precise accuracy for small details
  • Resistant to heat up to 250°F (121°C)
  • Stable in high humidity environments

Somos® Protogen Series

Somos® ProtoGen is a liquid, ABS-like, photopolymer that produces accurate parts ideal for general purpose applications. ProtoGen resins are the first stereolithography resins to demonstrate different material properties based on machine exposure control. Based on Somos Oxetane chemistry, ProtoGen offers superior chemical resistance, a wide processing latitude and excellent tolerance to a broad range of temperatures and humidities, both during and after build.

This high-temperature resistant, ABS-like photopolymer is used in solid imaging processes, like stereolithography, to build three- dimensional parts. Somos ProtoGen provides considerable processing latitude and is ideal for the medical, electronic, aerospace and automotive markets that demand accurate RTV patterns, durable concept models, highly accurate and humidity & temperature resistant parts.

Key benefits for 3D printing 

  • Humidity & temperature tolerant
  • High dimensional stability
  • Fast processing speeds
Somos® ProtoGen 18120 Data SheetSomos® ProtoGen 18420 Data SheetSomos® ProtoGen 18920 Data Sheet

Somos® 9000 Series

Whether you’re in the electronic, automotive or consumer goods industry, the Somos® 9000 series provides the ultimate solution for form, fit and function with parts that are semi-flexible. The pliable nature of these materials makes them ideal for snap-fit parts and casings. They are also useful in market research evaluation, helping to speed up the testing process so products can get to the marketplace faster.

Key benefits for 3D printing 

  • Highly transparent
  • Semi-flexible
  • Easy to use and finish

Somos® NeXt LV Grey

Somos® NeXt LV Grey creates tough, ABS-like parts with a high modulus while maintaining a low viscosity for effortless cleaning. Somos® NeXt LV Grey has good water resistance and thermal properties. This third generation Somos® high impact material focuses on creating quality resins that can produce tough, complex parts.

Somos® NeXt LV Grey produces parts that are more resistant to fracture and cracking than standard SL resins. It is ideal for use in functional testing and low-volume manufacturing applications.

This resin is excellent for functional end-use performance parts, especially snap-fit designs, impellers, connectors, and sporting goods.

Key benefits for 3D printing 

  • High modulus, low viscosity
  • Good water resistance & thermal properties
  • Good fracture resistance

Somos®  BioClear

Somos® BioClear produces clear, strong, tough and water-resistant parts. This product is the first in the Somos® BioLine portfolio for medical applications and is ISO 10993-5, ISO 10993-10 and USP VI certified.

Somos® BioClear is designed for medical applications that are non-implant and have limited contact with the body, such as dental drill guides and device prototyping.

Somos®  DMX-SL 100

Somos® DMX-SL™ 100, a durable and tough stereolithography (SL) resin, is an efficient and cost-effective solution that produces very accurate parts with a superb surface finish and high feature detail, promoting greater design freedom for composite applications

Key benefits for 3D printing

  • Stereolithography accuracy
  • High durability
  • Stiff & tough parts
  • Greater design freedom
  • High feature detail
  • Smooth internal and external composite surfaces
  • Maintains properties throughout composite processing allowing for dry mandrel removal
  • Reduces turn-around time from design to part