These are panels of my prefered round design. It is fit for ABB Swing / Tango switches or sockets.

https://new.abb.com/low-voltage/products/wiringaccessories/switch-ranges/swingl

After print, I use sandpapers of 150 400 800 2000 grit to achieve a polished surface. To be capable to polish the bottom of the socket I am enclosing a socket also from two components which can be easily glued with acetone after polishing.