shell problem

[caduser989275]

What is a non manifold input? I'm trying to shell something and keep getting this error.

[JD Mather]

Attach the ipt file here.

[Pierre Marcotte]

From the errors I've had before, this happens when the software calculates that two or more faces will intersect and create either strange openings in the part or physically impossible shapes (like 0 thickness walls, 0 degree angles, etc.) or when the result of an operation would go against preset standard values (like bend radii smaller than the preset).
It might not be the official definition, but that's what I understand of it (the "non-manifold") and when I correct the problems my way, it works.

I found this with a Google search. http://www.transmagic.com/node/118. What I said, but differently put.