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* ;-)
Try dropping an STL check on there and see what it tells you. Oh, also if it's a really heavy model it could just be the adaptive degradation that max has on by default for viewports.
Collapse that motherf'n stack! Do this regularly. Reset Xform too, and collapse. Turn on backface culling, check for flipped normals, and check for other probs with a STL Check modifier.
Thanks, STL Check seemed to have picked up a lot if not all the problem points. I'll update when I've fixed everything it highlighted and see if that solved the problem :)
Another all rounder, tailor made with young'uns in mind would be 3D Slash (a piece of cake) 'gamey' UI alongside works with .stl files - either free or paid licensing as well.
It happens when u have overlapped vertices . Just select all the vertices and weld them at a very low threshold, or try STL check modifier , if there is any mesh errors.