[Fixittt]

Digital,

I HAVE A CNC MILL NAH NAH NEE BOOO BOO!

I to am working on a design incoperating the "SLug"

I have been for some time now.

As far as the slots cut, It was done with either a Hot saw, or some sort of CNC saw. There is no way those were cut on a CNC mill, You would destroy end mills (Cutters) faster then you would make the slots.

Also, I did notice ho he machines out small pockets in the plexi glass to distribute the coolant over more of the core. I think this is a good design, but the slots are way to thin, maybe if they were 2 to 3 times wider you could get the coolant to "INJECT" thrue the slots at a high velocity.