spying tube for cnc cutting

[ognimodo]

Good morning to all boys, I looked in the forum but I didn't find a solution, I hope you can help me. I am designing a welded structure made of pipes for educational purposes. for tubes I am using the generative shape design, giving from time to time a thickness and then going to cut the tubes using the command "cut". once obtained the cut pipe, I would like to "open it" (that is to make it flattened). I tried to move into a sheetmetal environment, using the "tramoggia" command (hopper) but so I lose the variation of the thickness...how could I solve?
Thank you in advance! Have a good day.

 

[xxfast]

Why do you have to spy on the pipes?

 

[michelefiorentin]

Maybe he wants to develop on paper and then cut to size... what I call the laser piping of the poor! we did it for polybacorse.

the procedure seems to be correct:
extract the outer surface of the pipe
spy on her in gsd
design the contour

or extract
turn into sheet metal with hopper
open.

I didn't understand the problem well