Print Pattern/Body Unwraps

Hello all,
I want to unwind complex bodies, print them on paper like a pattern, cut them out and then glue them together. I have it done more bad than good via UC Editing, but the ratios are not correct.
Does anyone know how to do this? Maybe there is an architecture CAAD plugin or something?
If I cut the bodies into several meshes, then neither the ratio is correct nor do they fit together.

https://e.pcloud.link/publink/show?code=...SIzjYwjmL7

I would like to be able to print something like this at the end, of course much more complex, curved, rotated etc.
https://e.pcloud.link/publink/show?code=...H9WLepS8B7
It will certainly consist of several parts, I realize, but it would have to be scalable and in proportion to each other.

thank you ver much for support

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Welcome to the forums.

The pcloud links do not work. So we cannot see what you are doing.

Have you tried the Export Paper Model Add-on. It is included in Blender.

great! That’s what I was looking for… thank you very much.
(I will fix the links next time)
greets
Flavio

Glad to have helped
Happy modeling.