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Paints in multiple places at once on the mesh

Explorer ,
May 10, 2023 May 10, 2023

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Hi, 

New to Substance Painter. Just wondering why when I paint, it paints in multiple spots on the mesh instead of just one spot? I have mirroring turned off,  I have "UV" set in the Alignment on the brush setting and in the new project I have Use UV Tile Workflow checked. 

 

From blender it's just 1 material and 1 mesh. Do I need to assign more materials or set it up somehow so it doesnt do this? Or is this something I can fix in SP? 

 

Thanks!

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UV Tiles

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Adobe Employee ,
May 11, 2023 May 11, 2023

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Hi @sw2349600,

 

My first guess would be overlapping UVs. Can I have a look at your UVs ?

 

Keep me posted.

 

Cyril Dellenbach (Micro) | QA Support Artist | Adobe

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Explorer ,
May 11, 2023 May 11, 2023

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Thanks, how do I show the UV map in SP? I only see the textured version (attached).

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Explorer ,
May 11, 2023 May 11, 2023

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Here's the map in Blender though, it's hard to tell if it's overlapping. But would SP's uv map look different?

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Adobe Employee ,
May 11, 2023 May 11, 2023

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No problems, it's textured but those are still your UVs. It seems they're indeed overlapped. Basically, the UVs are the 3D model unfolded in a 2D space. Therefore, if the UVs are overlapping, it's as they're in the same space, creating the issue you're facing.

 

You'll need to rebuild the UVs and reimport the mesh. You can take a look at our tutorial about Model Preparation for Substance 3D Painter, or (if you don't want to bother with UVs) you can use the Auto-Unwrap option.

 

Auto-Unwrap.png

 

Just make sure to switch the Seams parameter to Recompute all in the Options.

 

Best regards,

 

Cyril Dellenbach (Micro) | QA Support Artist | Adobe

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Explorer ,
May 11, 2023 May 11, 2023

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Thanks so much for your help, it seemed to work before trying your method by not including the blender material. I had auto unwrap on before when it wasnt working. 

 

But good to know about your guide, I will keep this in mind. 

Cheers!

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