Marco...

I suggest you look at adding some more software to your CATIA system that will provide the specific tools you need to automate your "nesting" and "laser cutting" applications. If you have many parts to fabricate, having the correct tools will save you time and save your company money.

You might want to talk to your CATIA reseller about this. They can setup a demonstration and help with training and best practices.

I searched the www.catia.com webpage and found something called ACT/CUT V5 written by a company called Alma. DELMIA might be able to do this also. I'm sure there are other solutions as well.

(I helped a client several years ago with a similar sheetmetal requirement. Combining CATIA V4 with a package called "RADAN" provided a total automated solution for them)