Now after some weeks of doing CAD drawings and used the 3D-printer I'm very satisfied. The drawings doesn't take days anymore to do and the 3D-printer wark as a charm. The last drawing I have made I also have uploades as STL files to be download if it's interesting:
http://www.astrofriend.eu/3d-printing/3dprinting.html
Beware, thay can have erros, but works with my AnyCube delta printer.
/Lars