Hello,

I'm new to Solidworks, and I'm using v. 2012.

I tried to create a lamp shade with loft tool. After messing around I did create it sucessfully, but I can't shell it.

The error said something about a radius of curvature might be smaller than shell thickness. Maybe I built this part using a wrong way.

I have no idea how to fix this, so I attach a file in case someone could help me take a look.

Thank You