ZW3D 2011 is a very young CAD-system that Pär Nobring at r.a.p.s asked us to put againstone of the world leading CAD-systems today, Catia V5. Since we are going through aneducation that centers round engineering and technical facts, this comparison had to be in tunewith that.After discussion with both Pär Nobring, and our mentor Johan Wretborn, we came to anunderstanding regarding what should be done. We performed a technical comparison of thefollowing main features:· KBE tools (Knowledge Based Engineering)· Curvature and Continuity Analysis· File Format Translation Verification· NC MachiningWe are very happy with all our result, if you don't count the failure with the NC machiningsection. However none of the tests we did turned out unnecessary. It lead to a greaterunderstanding than we already had, and gave us very useful experience.