How SLA works: When the laser beam hits the liquid, it solidifies the resin. When a layer is fully traced, the elevator is then lowered in the vat. The self-adhesive property of the material causes the layer to stick with each other and in this way a 3d part is formed in multi-layers. SLA process is very accurate and suitable for smooth surface finished parts. These parts are widely used for conceptual designs, Product verification, Pattern making, Form/Fit analysis and light functional testing.