SLA/SLS

SLA and SLS models typically have layer thickness of +0.3mm with a lateral deviation of +0.1mm.

SLA prototyping is one of the earliest 3D printing methods. It using a UV light to cure a photopolymer, such as SOMOS Taurus, SOMOS 111 22XC, ABS. SLA is typically not fast but material can be maximize used, and the prototype can be used as a master mold for a polyurethane vacuum casting.

SLS prototyping use a laser to fuse powdered Nylon into a physical solid layer-by-layer. The process makes a prototype with rough surface texture that requires secondary finishing if it’s to be used as a master mold, but the advantage is that the prototype is more robust than its SLA counterpart making it more suitable for mechanical models.