I'm getting closer to building the metal rack. I have settled on the pieces and parts that are going to be used, and I've certainly blown my budget by 100%, but I looked to make it better and better rather then cheaper.
I think I overshot some pretty ambitious design requirements.
1. Able to interchange heating elements with ARS 7010 and/or Freedom Breeder large reptile compact.
2. Able to utilize the rackmount without modifications, while using it as a snake rack. (Should you want to install a stereo system, DJ amp, or rackmount UPS, you can.)
3. Be 100% reversible, with no permanent changes to the racks functionality.
4. Able to hibernate snakes in a basement with a below freezing ambient, and hold the tubs at a constant 55F or better.
5. Redundant heating system.
6. Use rackmount hardware, when possible. (Big name rails, etc.) The rails wound up being by far the biggest expense. If you already had rack and rails, you could build it way cheaper. (I used APC rails.)
7. Use as much crap that I already have laying around to simplify and make building this thing fit into my budget.
8. Uses simple hand tools, no precise measuring or cutting, as modular and versatile as possible, and basically assemble like an erector set for big kids.
Edit: I'm afraid soldering, basic wiring, running flexwatt, and metal cutting are unavoidable. Nothing too serious.
I'm getting really close to being able to take pics. Another week or 2.