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Stereolithography (SLA)

Stereolithography (SLA) models offer the most accurate type of fit/form prototype for the verification of any design before committing to your chosen production route. Its high accuracy and good surface finish makes it the preferred choice for designer models, engineering verification and master patterns for silicone rubber molds.

Anatomy of the SLA Process

  • SLA is often considered the pioneer of the additive manufacturing processes,  with the first production systems introduced in 1988 and patented by 3D systems founder Charles (Chuck) W. Hull. The SLA process utilizes a vat of liquid photopolymer resin cured by ultraviolet laser to solidify the pattern layer by layer to create or “print” a solid 3D model.
  • Material

  • ABS-Like
  • ABS-like, Black
  • ABS-like, Gray
  • Durable
  • High Resolution
  • High Temp PC-Like, Rigid
  • High-Impact ABS-Like
  • High-Temp ABS-Like
  • PE-Like (Somos 8110)
  • PP-Like (Accura 25 / VisiJet SL Flex)
  • Rigid, PC-Like
  • Semi-flexible
  • Technician's Choice


  • Nickel Plated
  • Painted
  • Primed
  • WaterClear


Frequently, parts produced by SLA are used as master patterns (pattern transfer process). The pattern is transferred to urethane castings using silicone rubber molds (SRM) or utilized for metal investment casting.

Rapid Prototypes:

  • Design Appearance Models
  • Proof of Concept Prototypes
  • Design Evaluation Models (Form & Fit)
  • Engineering Proving Models (Design Verification)
  • Wind-Tunnel Test Models

Tooling and Patterns:

  • Investment Casting Patterns
  • Jigs and Fixtures


  • Smooth surface finish.
  • High precision.
  • Short lead times.
  • Wide variety of material and post processing options.


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