I have imported a svg text, and extruded it. Then I applied Boolean-intersect with a cylinder to get the curved surface. Then smooth shading and edges split modifier. I get what you see in the picture, and I share the blend file.
(Edit: Please, press “Slow Download” button for download)
As can be seen in the image I get these faces (marked with the red point) as if they were in low relief with respect to the other faces. These imperfections are very noticeable in Glossy material with a low value of Roughness, and when the lamp is strong and small size.
It is very likely that I had applied bad procedures to obtain this final letter. But I want to know, assuming the case to get this mesh: how is called that kind of imperfections? Why are so noticeable with Glossy materials? What would be the best method to fix it?