At last I have started to practicing how to make 3D CAD drawings. I really need these 3D printed parts for my astronomy projects.
For you who want some insight I have my first simple drafts of CAD drawings here with some links of information:
http://www.astrofriend.eu/3d-printin...d-drawing.html
It will be a revolution for me to be able to make my own special designed parts.
/Lars