After exhaustive CAD & CAE, physical prototypes are required in Product Development.
Physical prototypes are required in a short period of time to meet various needs of
Product Development.

Rapid Prototyping (RP) technology enables fabrication of physical prototypes out
of various materials.

The most widely used RP techniques are
SLA - Stereo Lithography Apparatus
SLS - Selective Laser Sintering
FDM - Fused Deposition Modeling
3D Printing - Concept Modeler