im starting a project to make a water cooling test rig, being as ive never water cooled anything. i was wondering, instead of milling a piece of copper, which would be insanely hard for me to do, could i just take the heatsink thats on the processor already, take the fan off, and put some plexi around it? im not sure if that would work for corrosion issues, etc. can someone tell me if that would work? maybe i should take a heatsink and put it in water for a few days, see what happens... if there is a corrosion problem, could i use some sort of other liquid? thanks for the help!