Hello everybody.

I have a "generic" sheet metal rolled cone that i use when i create parts and assemblies. Until now, i have allways used the same part, giving the dimensions it needed with no problems.

But now, when i pretend to increase the thikness, obtain a "rectangular straight" shape. (see .part and images attached). 

I don't know if i changed something in my configuration unintentionally or i am skipping a step.