Hi,

I have a little followup on this issue. This time I tried to isolate one part from the model in order to export it and test-3d-print. I created a square, extruded it down and then did an bool -> isect on the main part.




The new object is a solid but as soon as I exported it to .stl, I saw in the preview that there something very wrong with it.


I have hidden the top, and I can see that there are superflous faces that don't belong there (color blue).


I deleted those but then I was left with these edges that I can not remove.


It gets a bit more complicated because there seems to be more edges close to each other.



What could I do in such a case?
Thanks again.