Step 8: Building the cooling system
I have considdered the use of silver for parts of the cooling loop, but at over £500 per kilo, it is a little out of budget, seeing as a tube of top quality thermal grease would be a better investment, seeing as copper is pretty close in terms of thermal conductivity.
I currently have my eye on a 6" x 1' bit of solid copper bar from which to machine most of the system, although aluminium sheet seems a more practical material for the top half of the waterblocks.
Looking at all the stuff that needs cooling, this will need a pretty epic pump to get it all working. most of the watercooling pumps for desktops seem to be about 30-40 watts @ 12v, so a brushless motor out of a VCR should give enough power to haul all that water around, while being thin enough to fit. (Actually, while thin enough to fit, it is over 3" in diameter with a very large magnet. I have extracteded another brushless motor out of a DVD drive, which should have a reasonable amount of power, providing the circuit id kept simple.