3DCS Mechanical Variation Analyst is a new tool from DCS specially geared for the mechanical world. 3DCS Mechanical is an easy to use product that allows users to model mechanical and kinematic assemblies with full range of motion. These assemblies use new joint and constraint assembly definitions instead of the 3-2-1 move routines which allow automatic extraction of the assembly process, making the modeling process faster and easier. This, in addition to the new kinematic solver, GGCM, allowing tolerance analysis of over-contrained assemblies, makes 3DCS Mechanical an excellent fit for performing variation analysis on engines, switches, gears and other mechanical components.