This switch design requires a 6mm momentary push button switch and 4 3mm leds. I needed a needed a momentary switch that had 4 ack/state feedback indications so this was made. LEDs could always be wired up or configured how ever is needed, easy to set up with something like an arduino. I printed top, bottom, and ring in black and then printed the button in clear, maybe white would work - or a thin layer or two of white with the rest clear. Switch is pressed into/onto bottom facing inner so the button will press down on it and leds are inserted from the bottom so they protrude into the switch body. Have fun.