My friend has a problem, he has this:
He did make it double-sided, and he used solidify modifier in the blender, so the problem is in something other.
How can he fix it?
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First make sure the normals are consistent. You can do that using the Matcap Normal material. If its messed up it looks like this:
The option is in the top right of the 3D view:
Since you’ve solidified, try turning off Double Sided.
Also try making the solidify thicker.
this is usually because of the glass material being weird. i assume you’re using glass?
what does the mesh look like without double sided on
The normals are inverted.
- Crtl + Shift + N to recalculate faces
- Crtl + N to flip individual faces
If ya do this then you can see which faces are/aren’t inverted. The faces marked with red are inverted.
