Can someone give me an idea on how to fix this issue. I keep getting the following message on the model attached. The model is of a steel cargo tank head.

"The Thickness value is greater than the Minimum radius of Curvature. The shell may succeed, but could cause undesirable results, such as bad geometry. To find the Minimum radius of Curvature, use Tools, Check."

I have created models similar to this before and have not had any issues with shelling the inside until now. I followed the same design steps as on previous models.

Any help and/or guidance is greatly appreciated!

Thank you,

Brian