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I'm new to Blender and I've got a problem while using the solidify modifier. I'm creating a Minecraft character using a rig and I want do a 3D-Head with the solidify modifier but it looks like this:In Preview

Rendered

The sides of the solidified faces are glitching; they should have the same color as the top part

[EDIT] I solved the problem; If I select every face seperatly and use Remove Doubles UV it works.

Niveauvolll
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    The issue is called z-fighting. It occurs when there is duplicated faces occupying the exact same space, the rendering engine cannot render faces that overlap like that. Go into edit mode, press the space bar and do "remove doubles". This is a commonly asked question on this site please read: https://blender.stackexchange.com/questions/12264/black-artifacts-in-my-renders and https://blender.stackexchange.com/questions/10958/extrusions-causing-problems-in-edit-mode/10961#10961 –  May 28 '17 at 15:24
  • I have already tried removing doubles but it didn't work – Niveauvolll May 28 '17 at 16:38
  • It is possibly the Solidify modifier creating those doubles, it is impossible to know without seeing base mesh topology or knowing how it was before solidifying. Please edit your question and provide wireframe views of the base mesh and with modifiers, or apply the modifiers and remove doubles afterwards. – Duarte Farrajota Ramos May 28 '17 at 23:47
  • I can't add a wireframe view because my reputation is to low and I can't apply the modifier because there are shapekeys – Niveauvolll May 29 '17 at 14:23
  • Try to give a bit of depth to the modifier so the faces are not overlaping. – Alex Saplacan May 29 '17 at 14:33
  • How do I add depth? – Niveauvolll May 29 '17 at 15:58
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    @Niveauvolll please don't mark the question as solved. Write a detailed answer on how you solved your problem and mark it as accepted instead, so that other people with the same issue might learn from your experience. Please read: https://blender.stackexchange.com/help/self-answer –  May 31 '17 at 13:32

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If you use a Vertex Group with your Solidify Modifier, vertices with a weight of 0 can end up running into the z-fighting issue.

A simple solution is built right into the Solidify Modifier, wherein the Factor field (located just below the Vertex Group field), can be set to an arbitrarily small value to make sure any 0-weight vertices are SLIGHTLY solidified, as well.

brockmann
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user16118981
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Solution I switched into Edit-Mode and selected one face that was wrong. Then I pressed Spacebar and used Remvoe Doubles UV. Now the incorrect face was correct and I continued with the other faces.

Niveauvolll
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