After some Years, my OPC Key Buttons went away. To save the Key, i've desigend a new Inlay.
Printed in TPU - works greate !
No clue needed !
DualColor MMU printable
I've printed the part on the textured Prusa Sheet to get a structured Surface.
TPU for the Body, PETG for the Symbols
If it is possible you should print the symbols first to get sharper edges.
The author marked this model as their own original creation.