I am thinking of a bottom die that would be rectangular in shape. Two or three feet wide and three of four feet long. L to R with a 3' radius and the long way with a radius equal to the exterior radius.

The top die would be the same but in reverse and would be perpendicular to the bottom die.

I can control amount of radius with my limit switch on the press. It is a 750 Ton Pacific that was used to form submarine hulls for the Navy.

I would appreciate anyones ideas or comments. Hope the pictures clarify what I am trying to do.

Thanks
Herman