pascal:
Hi Davide - I see this - it can be ‘fixed’ for now by making the cylinder have its seam aligned to X, that is, lining up symmetrically on the long axis of the top face. The problem seems to be caused by an ugly extending of the inner cylinder.
https://mcneel.myjetbrains.com/youtrack/issue/RH-39283
thanks,
-Pascal
@Pascal - Why is the offset surface a polysurface of two trimmed, overlapping surfaces rather than a single trimmed surface? That may be the underlying cause of the problem. I posted about this V6 behavior earlier today:
OffsetSrf in V6 produces undesirable results for smooth partially closed surfaces with two opposite edges coinciding including cylinders. The result of OffsetSrf is a polysurface comprised of two trimmed,overlapping surfaces, not a single untrimmed surface as in V5. The V5 results are clearly preferable to the V6 results. Polysurfaces comprised of trimmed, overlapping surfaces can cause problems if any further modeling is to be attempted with these polysurfaces.
Attached is a file with several…