Dents appearing in render The mesh seems alright but there are dents in render view; the mesh was created using modifiers (screw over a circle to create a spring):


What I tried:

recalculate normals for whole mesh
recalculate normals for selected face
dissolve/recreate face
The section you have highlighted is caused by the material on the object. Either remove the material, or move the affected sections away from the &quot;text&quot; in the UV map.

The section further down that looks improper is because of flipped normals. Select the whole mesh in edit mode and then select Mesh &gt; Normals &gt; Recalculate Outside.


After recalculation: