Greetings fellows.

I've got a 24x12 inch pan recently tigged for me that has suffered a significant bow. I left a lot of material in the 1/2" flange to reduce this AND to allow for subsequent machining as I expected some warpage. I've got better that 1/4" at each end. Excessive in my opinion.

So to machine it flat again there's several inches of clamping space intentionally available. I could just throw it in, knock it flat and ignore the flange thickness variations.

OR,

If I bored all the bolt holes and clamped it solidly to the casting could I apply the rosebud and relieve some of the warpage prior to machining?