MP Select Mini Illuminated Control Knob

I was wanting an improved knob and liked the grip of NOS-4A-2's design but wanted a bit more flash. I cored out the knob to let the leds shine through and made it so the top is an customizable coin that the light can shine through. The example I show is http://www.thingiverse.com/thing:3425564
Dragon yang by bremmalan
I just scaled it down to 29mm. Use a filament for the coin that light will shine through. I would like to try a lithophane in the future.