Hi Michael,

>>>It sounded like you were possibly having problems with sweeps more generally than that specific case?

The problems where mainly after sweeping on a projected (to surface) curve, then boolean out the sweep from that surface. I did mention that. (making etching etc)
Unfortunately, I did not keep those models. I will try to find some time to re-build to give you examples.

What I did find strange was: I was making cross cut booleans, (when posting to the boolean thread) and MoI did fail on most attempts. I did then load into Rhino, and that failed, but, when I imported the model and made all booleans in Rhino, it did work.

Anyway, I dont want to take this thread further off topic. So any finding I make I will make new thread (or post to that boolean thread) or e-mail the models with explanation.

- manz

edit:

I have e-mailed an example