making custom water blocks

[disturbed13]

how do you want make this block ?

i was hoping to have a sheet of copper machined to the required design
then to take a 3mm sheet of plexiglass and make/use gasket material to seal the 2 so that they are water tight
i want to be able to see the liquid flowing thru the block

http://www.mcmaster.com/#o-rings/=72oqvg

There you go.

is there any way of giving rep?
cuz you sir deserve it