I'm new to Blender and I started to learn by modeling an old camera lens with the help of this excellent tutorial on parametric non-destructive modeling: https://www.youtube.com/watch?v=v9CXeprYW1M&t=1626s

I've now encountered a problem that I can't seem to find a solution. I have modeled the lens body with only about 100 vertices and a screw modifier.

enter image description here

I then used BoolTool to create screw holes into the lens body. However, this somehow messes the topology and creates these ugly shading issues.

enter image description here

Does anyone have an idea how to fix the shading without applying the screw modifier? I would like to maintain the fast editability of the lens body.

I have tried increasing the steps of the screw modifier and moving the place of the screw hole a little bit, but none of them removed the issue, just changed the appearance a little.

Thanks in advance!

  • $\begingroup$ It's spin tool. $\endgroup$ – Lukasz-40sth Jul 2 at 8:16
  • $\begingroup$ Also related: Shading after Boolean. $\endgroup$ – Leander Jul 2 at 8:16
  • $\begingroup$ Try the edge split modifier, bevel modifier or auto smooth. $\endgroup$ – Leander Jul 2 at 8:17
  • $\begingroup$ @Leander Thank you! I had auto smooth already on, but I had to play with the angle setting to get the shading better. I also had to adjust the bevel settings on some other edges of the lens body after adjusting the auto smooth angle. $\endgroup$ – funky_vertex Jul 2 at 11:00