# UV creation in blender

This process will start in Blender, then move to Substance Painter, and finally Enfusion Tool.

I recommend using textures at 4096 or even 8192 resolution for higher quality and precision in Substance. In the Reforger tool, you can later downscale textures to 2048 if needed.

#### UV Creation in Blender

1. ****Separate Faces by Material for Easier UV Creation****  
    <span style="white-space: pre-wrap;">Select </span>**LOD0**<span style="white-space: pre-wrap;"> → </span>**Edit Mode**<span style="white-space: pre-wrap;"> → select all faces → P “by material”.</span>
2. ****Adding Seams****  
    Seams help control how textures are applied to objects. For instance, with a cube, if unfolded, you have six faces. Without seams, the texture will apply uniformly. With seams on all edges, the cube splits into six squares.
    - <span style="white-space: pre-wrap;">To create a seam, select edges → right-click → </span>**Mark Seam**.  
        [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/OV4image.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/OV4image.png)
    
    ****PRO TIP:****<span style="white-space: pre-wrap;"> In this example, I selected everything and created seams, but I don’t want interior wall seams (e.g., under windows). So, select those specific edges → right-click → </span>**Clear Seam**.
3. ****Creating UVs****  
    UVs unfold the 3D model (e.g., a cube with six faces). Start by renaming the UV map for both materials (which remain separate).  
    [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/9FOimage.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/9FOimage.png)  
    
    - <span style="white-space: pre-wrap;">For better visibility, go to each material, click the yellow circle next to </span>**Base Color**<span style="white-space: pre-wrap;"> → </span>**Image Texture**<span style="white-space: pre-wrap;"> → </span>**New**<span style="white-space: pre-wrap;"> → </span>**Generate Type**<span style="white-space: pre-wrap;"> → </span>**Color Grid**.  
        [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/3j9image.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/3j9image.png)
    - <span style="white-space: pre-wrap;">Click </span>**UV Editing**<span style="white-space: pre-wrap;"> (top menu) → </span>**New**<span style="white-space: pre-wrap;"> (4096x4096) → </span>**Color Grid**. A colored grid will appear on the left.  
          
        A colored grid has appeared on the left.  
        Now, when I select all faces in Edit Mode for a single material, I get a completely broken UV layout.  
        [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/lg7image.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/lg7image.png)
    
    <span style="white-space: pre-wrap;">Select all faces in </span>**Edit Mode**<span style="white-space: pre-wrap;"> of a single material. If the UV is misaligned:</span>
    - <span style="white-space: pre-wrap;">Press </span>****U → Reset****<span style="white-space: pre-wrap;">, then </span>****U → Unwrap****<span style="white-space: pre-wrap;"> to correct it.</span>  
        [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/Wuyimage.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/Wuyimage.png)
    
      
    You can also use UVPackmaster3:
    - <span style="white-space: pre-wrap;">After resetting and unwrapping, click </span>****A****<span style="white-space: pre-wrap;"> (to select all) in the left window → </span>**Pack**.  
        [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/6mHimage.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/6mHimage.png)
    
    Do the same things for each material
4. ****Verification****  
    <span style="white-space: pre-wrap;">Once UVs are set, return to </span>**Layout**<span style="white-space: pre-wrap;"> and verify that the grid squares aren’t stretched.</span>  
    [![image.png](https://wiki.nabla.sh/uploads/images/gallery/2024-11/scaled-1680-/8Dximage.png)](https://wiki.nabla.sh/uploads/images/gallery/2024-11/8Dximage.png)
5. ****Export****  
    <span style="white-space: pre-wrap;">Before exporting, select all materials and join them to the same LOD with </span>****Ctrl + D****<span style="white-space: pre-wrap;">. Export the FBX with only </span>**LOD0**.