
Formlabs Clear Cast Resin
RESIN · FORM 3 & 4 SERIES
CLEAR CAST RESIN
Overview
Clear Cast Resin is a resin designed for investment casting, allowing foundries to directly print patterns that can be invested and cast in-house. It features extremely low thermal expansion, low ash, and no trace heavy metals. When paired with latticing software, Clear Cast Resin is recommended for use with larger parts, excelling at producing geometries thicker than 3 mm.


Why Choose Clear Cast Resin
Clear Cast Resin offers an accessible solution for directly printing casting patterns in-house, reducing overall costs, decreasing turnaround times, and expanding production flexibility. It features best-in-class low thermal expansion to deliver reliable casting shells with minimal risk of cracking. The material achieves clean burnout with low ash and no trace metals or antimony, ensuring final cast parts remain uncontaminated. Highly accurate patterns within 0.25 mm of design can be cast across any metal or shelling system. Recommended applications include demanding engineering applications over 3 mm thick.
Technical Specifications
| Parameter | Clear Cast Resin |
|---|---|
| Ultimate Tensile Strength | 65 MPa |
| Tensile Modulus | 2.8 GPa |
| Flexural Modulus | 2.2 GPa |
| Thermal Expansion, -30-140°C | 94.8 μm/m/°C |
| Ash Content | <0.20% |
| Antimony | <10 ppm |
| Detected Transition Metals (>10 ppm) | Al, Cu |
| High Concentration Transition Metals (>50 ppm) | None |
| Compatible Printer | Form 2, Form 3/B/+, Form 3L/BL, Form 4/B, Form 4L/BL |













