Resins (SLA)

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Stereolithography

The photopolymer resins interact with the laser to form a precise solid surface. The laser beam is directed in the X-Y axis on the surface of the resin according to the 3D data (.stl file). The resin solidifies in the areas hit by the laser. Once each layer is completed there is a fraction of drop in the platform within the vat (Z-axis). This process will be repeated till the entire object is made and the platform can be raised out of vat for removal. The process involves cleaning and curing of the final products. Curing refers to the method of heating the part by passing intense light in an oven like structure to fully harden the resin. SLA process is mainly used to produce parts with smooth finish and which has detailing in it.

Applications

3D art models

Materials

Material Tensile Strength(MPa) Flexural Modulus(GPa) Impact Strength(J/m) Heat Deflection Temperature(degree C)
Clear (FLGPCL04) 38-65 1.3-2.2 16-25 42.7-58.4 @ 264 psi / 49.7 - 73.1 @ 66 psi
Material Tensile Strength(MPa) Flexural Stress at 5% strain (MPa) Impact Strength(J/m) (Post-cured) Heat Deflection Temperature(degree C)
Grey (FLGPGR04) 38 65 1.3 - 2.2 16 - 25 42.7 - 58.4 @ 264 psi / 49.7 - 73.1 @ 66 psi
Material Tensile Strength(MPa) Youngs Modulus (MPa) Elongation at Failure
Castable (FLCABL02) 11.6 220 13%
Material Ultimate Tensile Strength(MPa) Tensile Modulus(MPa) Elongation at Break Temp @ 5% Mass Loss(degree C)
Castable Wax(FLCWPU01) 11.6 220 13% 249
Material Tensile Strength(MPa) Tear Strength (kN/m) Shore Hardness (A) Heat Deflection Temperature(degree C)
Flexible 3.3 - 3.4 9.5 - 9.6 70 - 75 231 degree C
Flexible (Post-Cured) 7.7 - 8.5 13.3 - 14.1 80 - 85 230 degree C

Specification

Minimum Wall thickness: 0.8 mm
Minimum details size: 2 mm (for text/ hole diameters etc)
Layer thickness: 0.05 mm – 0.1 mm
Max dimensions: 145 x 145 x 175 mm (5.7 x 5.7 x 6.9 inches)
Standard Accuracy: ± 0.2% (with lower limit on ± 0.2 mm). Dimensions tend to change with exposure to direct sunlight or another UV source
Lead Time: Minimum 2 working days for despatch
Surface finish: Smooth, with tiny visible layers

Post Processing

Basic: Support Removal, Curing, Smoothing
Add on: Primer, Coating/ Painting

Frequently Asked Questions

By exposing resin materials to UV light, the stereolithography technique cures them layer by layer.

 

SLA is ideally suited for creating visual prototypes from a variety of thermoset materials with exceptionally smooth surfaces and fine details.

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