Looking specifically at the two-part black frame that contains the rest of the keyboard parts.

The lighting accentuates it and makes it look worse than it is, and it’s certainly not hard to live with, but it’d be nice to fix it.

Basic Ender 3 clone (Voxelab Aquila) with no real physical mods to speak of. PLA, .2mm layer height, 50 or 60mm/second. Happy to add any other details as requested.