3D CAD Design
3D CAD is the most important element of open source product design. For design to produce buildable results as designed - as opposed to bullshit design - the design must be dimensionally-correct, complete, and exact. An open source tool that allows this to happen is FreeCAD.
See FreeCAD 101 for 2 tutorials and an exam, which is to be taken by any person interested in joining the OSE Engineering or Documentation Teams.
The OSE Part Library is the official repository of module CAD accepted into the Global Village Construction Set. Only approved developers have commit privileges into the Part Library, though other pages on this wiki may be used for uploading other designs. To request that a 3D CAD file be accepted into the OSE Part Library, email CAD at opensourceecology dot org to submit a Pull Request.
Before a complete CAD model is complete - or before the design is finalized - there are parts of the design that are already known or established. These constitute the 3D CAD Library.
Sample recording :