@spikeyxxx You are absolutely right, I should follow more the “keep it super simple” (k.i.s.s.) principle . Only one question arises for me when you propose vertex sliding for creating the shape of the cut-in edge: How do you ensure that you don’t loose the round shape in the area of your cut-in piece? With light inciding on your sphere at a sharp angle you can even see a very subtle surface unevenness.
