I used Cat5 for each loop's sends/receives between switches and jacks. Mogami for the main I/O, 20 awg for the ground bus and a few other things. I epoxied the LEDs into place in hardboard. This is more of a disasterous prototype and proof of concepts than anything I plan on using.

I made so many "mistakes" and learned so much at each turn I decided to commit to finishing it no matter how heinous. I'm glad I did. I can make a KILLER pedal board now given another year ;)