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I'm a beginner in blender. Trying to texture a 3d furniture model which was downloaded from the manufacturer site. Geometry is made of stretched triangles. This causes problems of stretched texture which is visible on render.

I unwrapped the model with "smart uv project" but the geometry is still stretched Is there any solution to texture it properly or I need to remodel it to make it quads?

What if I need to use dozens of real furniture models like this? Should I model everything from scratch in blender?

some pictures to explain:enter image description hereenter image description here enter image description here

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  • $\begingroup$ Hello :). Triangulated UV map shouldn't be a problem. I'd check the model's normals and double vertices (typical problems on imported geometry). $\endgroup$ – Jachym Michal May 26 at 16:54
  • $\begingroup$ Hi, thank you for the reply. Model's normal are ok - all highlighted blue on a face orientation preview. I've also cleared geometry doing: Mesh edit > selecting all> clean up > merge by disatnce which resulted in cleaning over 7k vertices. But there is still problem on my texture $\endgroup$ – Antek May 26 at 17:00
  • $\begingroup$ Well then, you can share the file, and I'll take a look :). I'm rather bad at guessing. $\endgroup$ – Jachym Michal May 26 at 17:03
  • $\begingroup$ Thank you ;) I'm not sure if it is ok if I put download link on wetransfer: we.tl/t-JgWgkM54AU $\endgroup$ – Antek May 26 at 17:08
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    $\begingroup$ Thank you very much! You've made my day ;) I've been struggling this for several days ;p $\endgroup$ – Antek May 26 at 17:51
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This is caused by N-gons and double vertices.

If you only need simple shading, go Object > Shade flat and disable Autosmooth.

enter image description here

You can also use Mesh > Clean up > Limited dissolve to merge flat faces.
Before any larger changes, the mesh should be properly repaired.

enter image description here

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