Problem to "SHELL"

[Lim Chee Beng]

When I try to "SHELL" my 3D model to be the attached model with the condition B > A, there will be unexpected result given, such as bottom face at zero thickness. Any workaround without compromizing the intended shape and wall thickness?
:mad:

[Mike Robbins]

One Option:
Before you shell. Offset the flat surface out a distance like 1 or 2 mm, enough to make sure the blue surface can be created by shell. Shell it. Then move the two surfaces of your wall back the 1 or 2 mm you offset it before your shell.

Enjoy:)