Do you have a Tractor Supply Company near you? That's where I get my cage wire--much cheaper than paying the shipping for mail-order. 1"x2" for the sides and top, and 1/2"x1" for the floor. I got the J-clips and the J-clip pliers from Bass. I make my own doors from 1"x2" wire, and use the finger-loop spring latches from Bass. I have resting boards from Bass for my Cals, but my 'Zils, being lighter and not prone to sore hocks, don't need them. If you are going to use dropping pans, check to see what sizes are available before you make your cages. The standard sizes seem to be 24"x24", 30"x30", and 30"x36", but I've been having a hard time finding the 30"x30". TSC carries them, but mine seems to be constantly out of them. I may have to order some from Bass.