Quote Originally Posted by phill05 View Post
Hi Reefy, I have been running with a demo of DeskProto today and it is producing a good Tap file but very large, so I have not got the tool-paths right yet some more testing required, I think it will do what you want and it's not too bad to learn.
Download a copy put an STL into it and watch the video for the settings you need.

Phill
The use of STL models for CNC path creation could be part of your file size issue, the paths will be following the polygons which form the surface and there will be many of them ;-)