D3D Universal With Dual Z Axis Version 0 3 0
- track record of design decisions 
- observations for possible improvements during Berlin build (in German) 
- build instructions (in German) 
Improvements to Version 0.2.0
- X-Z-Connection. On one side of the X-Axis, we used short idler instead of motor-piece and cut X-Z-Connection-Piece with a saw to fit short idler.