Much like the Selective Laser Sintering (SLS) machine, the Stereolithography (SLA) operates by using a laser to trace out a path, while also curing along the way, to create a solid shape from liquid material, one layer at a time. The shape of a part is determined by a digital file which is made using Computer-Aided Design (CAD), and is then sent to the SLA for printing.

It has become an incredibly popular form of additive manufacturing technology thanks to its ability to produce highly accurate, isotropic, and watertight prototypes and parts from a myriad of different materials. The finish is also particularly smooth, which reduces the need for extensive post-processing. It’s also renowned for its high resolution and accuracy, impressively sharp details, and all-round versatility.