Did you find something to do the job?
I know that a number of vendors have software that will do this- I worked for Amada, and they have lots of sheet metal-related software, for programmming, nesting, unfolding, and so forth.
No, it isn't cheap.
No, I haven't used much of it.
Aside from what they (Amada) can show/tell you, I do know some fellow Amada alumni who might be willing to discuss...
regards
Jay
Jay Maechtlen