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Why Choose Clear Cast Resin?
Clear Cast Resin is an accessible solution for directly printing casting patterns in house.
Accessible pattern production in-house
Clear Cast Resin on Formlabs SLA printers enables direct production of casting patterns in-house which reduces costs, decreases turnaround times, and improves flexibility in iterating and production.
Low Thermal Expansion
Best in class thermal expansion for reliable casting shells with minimal cracking.
Clean Burnout
Clear Cast Resin achieves a clean burnout with low ash and no trace metals, leaving nothing to contaminate the final cast part. Clear Cast Resin is fully antimony free.
Accurate and Versatile
Create accurate patterns within 0.25 mm of the design. Compatible with any metal or shelling system, allowing foundries to cast new designs in record time.
Workflow for 3D Printing Investment Casting Patterns
3D printed patterns can be used to directly replace the molded wax patterns typically used for investment casting allowing for complex geometries, and faster iterations without dedicated tooling. The process for creating a 3D printed pattern is typically:
- Shell, lattice, and add drain holes to the part with a tool like Materialise Magics or Formware
- Orient, support, and slice the pattern in PreForm
- Print the pattern
- Wash, post-cure, and remove supports
- Plug any drain holes with wax or cure a small amount of Clear Cast Resin over the hole
- Attach the pattern to a casting tree and proceed with the rest of the casting process
Mechanical and Burnout Properties
Tech Specs
Ultimate Tensile Strength
Tensile Modulus
Flexural Modulus
Thermal Expansion, -30-140°C
Ash Content
Antimony
Detected Transition Metals (>10 ppm)
High Concentration Transition Metals (>50 ppm)
Post-Processing
Form Wash (2nd Generation) Settings
10 min + 5 min in IPA
Wash the part in Form Wash L in IPA for 10 minutes, blow out the interior with compressed air, and then an additional wash of 5 minutes. Wipe down any additional resin using a paper towel and IPA. Allow the part to air dry for 30 minutes or dry the remaining IPA off of the surface with compressed air. It is critical to remove all trapped IPA, as any remaining liquid can cause vapor in burnout and lead to shell cracking.
Form Cure (2nd Generation) Settings
5 min
60 °C
Because curing reinforces the stiffness of the part, it is easier to remove the supports before. However, removing the supports after curing can prevent breaking the part, especially for fragile geometries. If the part is prone to warpage, use a post-curing schedule with no heat.
Compare Formlabs Castable Resins
Applications
Fine filigree
Lightweight jewelry
Dental
Compatibility
Form 2
Form 3/B/+
Form 3L/BL
Form 4/B
Form 4L/BL
Applications
Medium to heavy jewelry
Medallions
Figurines
Small engineering components up to 5 mm thick
Compatibility
Form 4/B
Applications
Demanding engineering applications over 3 mm thick
Compatibility
Form 2
Form 3/B/+
Form 3L/BL
Form 4/B
Form 4L/BL
