Ive just finnished making the channels - well almost. If you look in the pic you can notice the end channels are a bit deeper than the main channels. The drill bit you see in hte pic is what i hope to use to level the ends of the channels out, to reduce flow resistance. Instead I could have just went deeper in all the channels, but i didnt want to make the base tooooo thin.
Also, not sure if you can see in the pic, but I went slightly past the end channel when making the main channels deeper. I think i will have to fill those bits with some solder just to make sure it cant leak atall.. It probably doesnt need it but I will anyway...
The lid is a bit dark in the pic, so you might not see the divider in the middle which splits the inlet and outlet.
Im hoping this will beat a dd maze4 gpu by several C. Though I dont have one for testing.. so a comparason cant be done, unless someone would lend me one? (note - Im in the UK, not US..)
Edit - forgot pic