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DSM Somos SLA
Somos WaterShed White
Universal SLA material for accurate, detailed parts across a broad range of applications.
More from SomosSomos WaterShed White is a general-purpose SLA resin in the WaterShed family, with durability as well as moisture resistance similar to ABS and PBT. Parts come off the machine opaque white with a smooth surface, which can save sanding, finishing and painting on concept models or functional prototypes.
Key properties
| Property | Value (UV post-cure) | Test method |
|---|---|---|
| Tensile modulus | 2,658 ± 49 MPa | ASTM D638M |
| Ultimate tensile strength | 54 ± 0.52 MPa | ASTM D638M |
| Elongation at break | 6.6 ± 0.8% | ASTM D638M |
| Flexural strength | 67 ± 0.5 MPa | ASTM D790 |
| Flexural modulus | 2,137 ± 129 MPa | ASTM D790 |
| Izod impact (notched) | 26 J/m | ASTM D256A |
| Hardness (Shore D) | 79 | ASTM D2240 |
| Water absorption (24 hours) | 0.31 ± 0.02% | ASTM D570-98 |
| HDT at 0.46 MPa | 59°C | ASTM D648 |
| HDT at 1.81 MPa | 54°C | ASTM D648 |
| Liquid resin | Value |
|---|---|
| Appearance | Opaque white |
| Viscosity | ~340 cps at 30°C |
| Density | ~1.16 g/cm³ at 25°C |
Figures from the Stratasys Somos WaterShed White material data sheet (MDS_SL_Somos WaterShed White_0326b). Values vary with machine, processing and post-cure. Product description checked on stratasys.com in October 2026.
Key benefits
Easy to process and finish
Good moisture resistance
Very durable
White, smooth finish straight from the machine
Typical applications
Functional prototypes
Concept models
Medical device prototypes
Parts for consumer products, automotive and aerospace work
Supply in the UK
Supplied by Europac 3D for UnionTech SLA printers. Stratasys list Somos WaterShed White as compatible with large-frame, 355 nm laser-based open stereolithography printers. See the rest of our UnionTech SLA resin range. Somos WaterShed White is priced on application, so ask us for a quote and tell us which machine you run.
Supplied for UnionTech 355 nm SLA machines only: the Pilot, RSPro, RA, D600 and Lite ranges. Confirm the exact model and resin profile with us before ordering. Not for UnionTech SLM metal, DLP or LCD systems, or for other printer brands.
Works with these machines
Profiles are pre-tuned for these. Running it on something else is usually possible — ask and we will tell you honestly.
- UnionTech Pilot Series SLAIndustrial SLA in an open material system — run Somos or any resin that suits the job. PILOT 250 and PILOT 450, from a 250 mm to a 450 mm platform.View machine →
- UnionTech RSPro Series SLALarge-format industrial SLA up to a 2.1 m build — full-size parts, props and patterns in one piece, on a completely open resin platform.View machine →
- UnionTech RA600SLA printer for tyre mould production. Build volume 600 × 600 × 400 mm, tread patterns held to ±0.1 mm.View machine →
- UnionTech RA900Dual-laser SLA printer for tyre mould production. Build volume 950 × 550 × 400 mm.View machine →
- UnionTech Lite 600 2.0Compact industrial SLA for small-batch production of general parts. Build volume 600 × 600 × 400 mm.View machine →
- UnionTech D600SLA printer set up for dental and orthodontic models. Build platform 600 × 600 mm.View machine →
