Where can I get part diagrams for 3d models? krsna 14 Aug, 2016 04:42 PM I am a beginner and need some part diagrams for practice. Please provide me with source for part diagrams. 1 Answer Pradeep Somasundaram Answered on 10 Feb, 2017 06:54 AM GrabCAD itself. Else, Go for Google Image Search. "Mechanical Design and Drafting"