Rapid prototyping systems are based, almost exclusively on polymer, or paper materials.
The dimensions of the parts produced are limited by the volume of the processing area within
the machine, and parts tend to warp or distort due to shrinkage and lack of support. Also the
mechanical properties of the part are restricted to those of the processable materials and thus,
in many cases, required 'engineering properties' cannot be obtainedMechanical Engineerin