Draft plans, usually on a Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) system in 2D and 3D models. 3.Analyze the production elements with software solutions, looking for areas of flow, dimension, and geometry that may cause problems such as high pressure fills, short shots, weld lines, poor cooling, part distortion, air traps, sink marks, bad gate locations, etc. May also run a working sample with 3D Printing, Stereolithography, or other system for rapid prototyping.