Curt,
Too damn much.😀 When I get time, I'll add it all up.
JWMiddleton,
Do you mean the motherboards? If so, the single proc ones are standard ATX size, the dualies are a bit larger. If you mean the plywood, it's 13" x 16".
The individual node pics that you're looking at aren't completely accurate. I need to update those. Originally, I was using the 5 1/4" mounts as a way to anchor it to the wood. But, if you look closely at the rack itself, the floppy drives are mounted with a plain metal bracket that wraps around them. Got the drives, including the bracket, for $5 each at Boeing Surplus.
Russ, NCNE