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I made a triangle by creating a circle and then reducing the vertices to 3. Then i changed to positions of the corner points using edit mode. After that i extruded the triangle to be, what I assume to be called, a mesh. But now, as you can see in the screenshots, if I want to apply a material, only the extruded edges get covered with it, not the triangular surface itself. I tried UV Mapping it, but that didn't change anything. I'm fairly new to Blender, so I don't know a fix.

What can I do about this?

Screenshots: Overview

Close Up

UV Map

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  • $\begingroup$ Hello, your screenshots didn't make it into the question. You can edit the question to add them $\endgroup$ Feb 16 at 16:25

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When a Mesh Circle is instantiated, it is only the vertices and edges - it doesn't have an inner face yet.

First, starting with a 3 vert circle, you can select all the vertices and create a new face with F.

enter image description here

Then, when you extrude E up, a new face will be created on top as well, and you're left with a fully manifold shape.

enter image description here

You can then generate UVs or otherwise apply a material as normal.

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  • $\begingroup$ Thank you, that was the fix! $\endgroup$ Feb 16 at 16:52

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