SLA 3D Printing (Stereolithography)

How it works

1. The model is sliced and oriented to minimize support contact on cosmetic surfaces.
2. A laser draws each layer on the resin surface, curing it to the previous layer.
3. Supports stabilize islands and overhangs during the build.
4. Parts are washed, post-cured, and supports removed before optional clear coat or painting.

Key advantages

• Excellent surface smoothness and sharp detail for show models and fit checks
• Wide resin palette: tough, flexible, high-temp, castable, and transparent grades
• Stable dimensions for mating interfaces and presentation-quality prototypes
• Efficient for small, intricate geometries

Typical applications

• Concept models and design verification before tooling investment
• Master patterns for silicone molding or investment casting workflows
• Dental and medical visualization models (material grade dependent)
• Consumer product enclosures and ergonomic studies

Materials

Specifications

Design tips

• Keep wall thickness above vendor minimums to avoid brittle thin shells.
• Drain holes help resin flow on hollow cosmetic parts.
• Mark cosmetic surfaces in drawings so supports can be hidden on B-side geometry.