1
$\begingroup$

I am a blender beginner. I am making metal sculptures by welding laser cutted pieces. normally I am drawing several random shapes and exporting them as dxf/dwg files. I use those random shapes , deforming them by hand and welding them.

I decided to create more accurate pieces. I modeled a face then I Uv unwrapped . I exported that unwrap and cut it. However, as you might imagine unwrapping was different then the real shape. While eyes and nose are very top of the head become huge. It did not satisfy me because of size distortion. (I am adding picture of my trial with face unwrapping)

I am looking for a solution to produce more accurate pieces. for instance, I want to project curved 3d forms (like nose) to 2d surface with minimum distortion. then I can bend those pieces with hand and weld it together. to sump up, I am waiting for any advice that help me to design metal pieces closer to the original blender design.

Thanks for your help :D

an example with random pieces:

 an example with random shapes

laser cut of Uv unwrapping :

enter image description here

$\endgroup$

1 Answer 1

0
$\begingroup$

Maybe you could try the paper model addon? It is part of the standard addon catalogue and it should help you unwrap your model distortion-free. You can find documentation here: https://blender-addons.org/export-paper-model-addon/

$\endgroup$
4
  • $\begingroup$ thanks, I already tried that add-on . However it works only with geometric and basic forms. Although, it is very helpful, l I am looking for a solutions with more curved and organic forms $\endgroup$ Commented Feb 10, 2021 at 14:33
  • $\begingroup$ I just got an idea: As you can only lasercut planar elements anyway, you could use a decimate modifier set to "planar" before exporting... $\endgroup$ Commented Feb 10, 2021 at 14:58
  • $\begingroup$ thank you again. I tried, while geometry simplified parts are still deforming and at some points it is deforming even more. But I guess there is no way to create 2D layout of 3D round object without tension/distortion. $\endgroup$ Commented Feb 10, 2021 at 21:45
  • $\begingroup$ The only thing you can do is limit the distortion to an amount you're comfortable with, but a perfect unwrapping is geometrically impossible, I am afraid. $\endgroup$ Commented Feb 11, 2021 at 7:31

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .