Stereo lithography Apparatus (SLA) ─ offers probably the most accurate form of rapid prototyping .These models lend themselves to the geometric validation of components, and can be a vital communication aid for marketing personnel and tool makers alike. They can also form the basis of downstream tooling activities or test procedures.

 

Selective Laser Sintering (SLS) ─  is one of the most frequently used systems for providing strong durable models. This system is generally used for function applications, or where the model will be required to be tested physically.