Stereolithography or SLA is one of the soonest 3D printing innovations and one of the most flexible. It fabricates parts layer by layer from a photocurable tar. A powerful UV laser is engaged onto the form stage to fix the material each layer in turn.

SLA offers a scope of material alternatives and furnishes leaves behind incredible exactness to CAD and a decent surface completion. The parts should be worked with help structures which are eliminated post cycle. SLA is a decent choice for models and low volume creation.