why in line 6 when I offset,
the line is broken like that???
If you can share the file with the original curve, someone may be able to figure it out.
Amphitheater.skp (154.0 KB)
I need 10 offset for amphitheater stairs,
Remove the bad one and try again, works fine for me.
As @Box, I was able to delete the incorrect curve and then to offset 300mm (repeared clicks on the inner face) about 25 times without any problems. I thought that would be enough.
I have no idea what happened to your file.
you can send back the file? (after repaired)
I’ve try,
not work 