I'm not familiar with an emergency saving mechanism and I also haven't had any crashes of FC lately. Is there a chance you can pack up the recovery files so I can have a look at them? Unfortunately I don't know what's involved in doing so.

Path uses clipper, and on top of that libarea and the usage has been challenging. On top of that the libraries are practically unmaintained. I meant to replace it with pure OCC but the behaviour of "makeOffset2D" makes this a no-go. sliptonic has found the library CavalierContour (MIT lice...

The offset value should be sufficiently small to avoid self-intersections in resulting shape. Otherwise these self-intersections may appear inside an offset face if its initial surface is not plane or sphere or cylinder, also some non-adjacent offset faces may intersect each other. Also, some offse...

that's bad - I'll have a look, will take a bit though, gotta compile an old branch to look at your file.

I've been looking into this and it is indeed a limitation of the underlying OCC kernel. Unfortunately there is currently no known fix for the issue. The next version of OCC does have some improvements in this area but I haven't had a chance to play with that yet, so no guarantees it's fixed there. A...

It is probably one of those OCC issues, where nearly tangents don't work. I have created a sketch from the wire and made the connections tangent with some additional construction lines (now as I write it, I realize that I could try to simplify the approach), and now positive and negative offsets wo...

Attached is a file with a Part.Wire shape. If I try to offset it by any positive offset it fails. Offsetting with a negative offset succeeds. Anybody know what's going on and how to fix it?

never mind - my issue was due to some experiments I had run.

Isn't this discussion a bit moot since you're supposed to touch off and set the correct z-height before running the job?

I ran into the same issue today and I'm pretty sure I did have the toolbit directory set before. There might be something strange going on.