Hello Reima,
thank you for your answer. I am lurking on this site for several months now and saw also the mentioned thread (probably all of them already).
I forgot to mention that I will be turning the cups and baffles on a lathe. The cups and baffle in the thread you posted were created using CNC.
To achieve something similar on a lathe (see the "pillars" for screws in the first picture in
post 29 of that thread), I would need to make the cup walls thicker so the screws are closer to center by few millimeters, leaving a deep enough groove for the earpad lip to slide into it. This on the other hand could make the headphone too heavy. Striking a balance between the groove depth and cup wall thickness could be quite tricky so I leave this option as my last resort
M