This gamecube keycaps are keycaps for mx keyboards. The top surface is printed with additional thickness, so no light shines through the keycap itself. The mount is designed to be conical and slightly loose, ensuring the key doesn't jam on the switch but still holds firm and stable.
 

Keep in mind, if you change the layer height during printing, the fit on the switch might be affected. Be sure to check compatibility and adjust scaling as needed before printing!