I'm looking for general advice on how to find and repair bad geometry since I've run into this a few times now with models that were made by other people using other CAD programs that I have then imported into MoI and tried to edit.

Generally what are the fastest ways to find problems?

• slivers
• tiny gaps where one surface of a solid gets really close to itself or another surface of that same solid
• degenerate surfaces
• degenerate curves
• self-intersections

I found some posts about this, but the methods seem a little tedious:

http://moi3d.com/forum/lmessages.php?webtag=MOI&msg=7582.1
http://moi3d.com/forum/lmessages.php?webtag=MOI&msg=5786.1
https://moi3d.com/forum/lmessages.php?webtag=MOI&msg=10879.1
http://moi3d.com/forum/lmessages.php?webtag=MOI&msg=5698.1

And I've tried manually doing a binary search by slicing up a model until I find the problem area, but this also takes some patience.

On the repair side, how should I get rid of slivers once I've found them? I just had a case where I tried to do this for an extrusion by extracting the profile curve and then tried Merging the tiny curve segment associated with the sliver with its neighbor, but it turned out that Merge didn't do anything even though the curves are tangent. I also tried untrimming, but the underlying surface didn't extend past the trim curves. Basically, how can I make a large piece out of a large piece and a tiny piece? Or do I need to reconstruct the problem area from scratch?

- Peer