Home made VDE100 3D printer rotary extruder

This is a way of making rqthree's VDE extruder (see https://www.thingiverse.com/groups/an... and also    • VDE Extruder  ) at home using a limited tool set. 00:00 Introduction. 01:10 The tools I used. 02:08 Components. 02:22 How the VDE100 extruder works. 08:27 My version of the VDE100. 11:56 Grinding the knife edge. 17:54 Assembly. 19:05 Does it work? 20:38 Caveats? 22:08 What would I change? 22:36 Mounting it on the printer. 24:03 Conclusion. FreeCAD and STL files can be found at https://www.printables.com/model/2682...