moshel

I have read about that and the parts overlap. I have also did the difference of the inner hole before extruding to prevent "misunderstanding" about the faces. Again, i must be doing something wrong but i fail to see what.

The model is not that complicated (you can see it in the autocad viewer link) , actually. Just under 20 openscad lines... Removing the hole did not help, alas. I'll try the meshlab route. I really can't understand why my model is so difficult for all cam software... But, as i said, i am very new to this. Thanks again, Moshe

Thanks lars... I was afraid this was the case. The docs mention a new, experimental waterline algorithm. Is there a way to try it? I'll try simplifying the object. Maybe remove the central hole... On the bright side, pycam is really the only cam i tried that can even surface this shape... So well done! Cheers, Moshe

Hi, I am pretty new to this so it's probably something stupid. I have created a shape in openscad, exported it as stl opened it in pycam 0.61 and after some hickups (collision model was not selected so it ignored my model) it produced the right tool path for the slice removal process. However, the part is roundish so i wanted a waterline pass as well. when i tried to do that, the toolpath milled inside the part, not outside. this is the model in audodesk viewer (i don't think it allows downloads)...