Stereolithography, also known as Vat Polymerization is a 3D printing process where a photopolymer resin in a vat is selectively cured by a light source. The two most common forms of Vat Polymerization are SLA (Stereolithography) and DLP (Digital Light Processing).

The fundamental difference between these types of 3D printing technology is the light source they use to cure the resin. SLA printers use a point laser, in contrast to the voxel approach used by a DLP printer.

  • Types of 3D Printing Technology: Stereolithography (SLA).

  • Materials: Photopolymer resin (Standard, Castable, Transparent, High Temperature).

  • Dimensional Accuracy: ±0.5% (lower limit ±0.15 mm).

  • Common Applications: Injection mold-like polymer prototypes; Jewelry (investment casting); Dental applications; Hearing aids.

  • Strengths: Smooth surface finish; Fine feature details.

  • Weaknesses: Brittle, not suitable for mechanical parts.

Stereolithography (SLA)

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