FreeCAD: Sketcher, PartDesign, 2D drawing from 3D model
FreeCAD r4775. This video shows modelling valve similar to valve from this www.youtube.com but this time are used modern “Sketcher” and “PartDesign” instead “2d Drafting” and “Part” modules. You can also see (still very incomplete) “Drawing” module responsible for blueprints.