Hi PaQ, I've got to head out for a while, I will take a close look when I get back later, maybe there is still a bug in the handling of "Avoid smaller than".

Sure, it's a really low priority bug (if it's a bug) anyway ;)

Hi PaQ - it is a bug.

The way "Avoid smaller than" normally works is if an edge is smaller than that distance, it switches to an angle of 35 degrees. The idea is to switch to a rough angle for small features below a certain size, so that those little features don't get a ton of teeny-tiny polygons when you may otherwise have a fairly tight and dense mesh in the regular-sized features of your object.

The bug is that edge refinement was still switching to 35 degrees even if the regular angle was coarser than that (surface refinement was handling this ok). So it actually ended up switching to a tighter angle (just on edges) instead when it kicked in.

I've fixed this for v2 - the fix itself doesn't really do you much good because it just makes sure that "Avoid smaller than" has no effect at all when the regular angle is above 35. So just don't set "Avoid smaller than" when you have an angle > 35 and that will do the same thing.

Thanks for reporting the strange behavior!

- Michael