Shell failed

Schelling run one of the upper face, for example, by one unit. Rhino 6 will be arranged this shelling? In Rhino 5 you can not do properly. (But if you run an offset of the contour of the face it works fine).
shell failed x.3dm (326.0 KB)

Ciao Davide

My guess is that the Shell command assumes Corner=Sharp, and you cannot close such a shape that way:

OffsetSrf with Corner=Round does a good job.

I think what you are asking for is a Corner Type option for Shell.

Ciao, buon anno !

I would say yes; if it makes sense to offset the profile, then it makes sense also run the shelling, in this case …

Buon anno anche a te!


I filleted the edge shown by the leader at one micron and then the shell command worked fine at a 2 mm thickness. My guess is that you can fillet that edge infinitely small and “shell” command will still work by forcing the cylindrical inner surfaces to blend to each other.

I do not speak Italian yet… So, Happy New Year!