For me i just needed to make sure that the mesh passed an STL Check. In other words, intersecting meshes are just fine as long as they are cap and closed. B
I opened file (dwg) in autocad and tried import to stl. It tells me that there is no solids (only lines). I tried to convert it to solids (CONVTOSOLIDS command) and it tells:
I tried the following: I took and STL check clicked "Everything" and then "Check" and after the check it says 0 isolated vertecies so can this just be a detection error?
Thanks mate. I totally can't explain it (because I'm not sure what I'm doing)... but running STL check made the bad polys disappear... *fingers crossed* ;-)