hmmm, suppose it wont cost too much to get the channel milled deeper. I would have got it done in the first place, but my dad got the copper and got it milled while i was at school so i didnt know it would end up so thick
will it matter if the channels are alot thicker than the rest of the piping though the system?
i just realised, its actually only 7 mm thick base.
currently the Piping (electrical conduit, im going for the tidy look, very little actual hose) has a 123mm² area, and the waterblock channels are 132mm². if i got them deepened(so that the base is 4 mm) they would be 178mm² so the flow would be slow thru the block.
maybe if i got the channels milled deeper, and then put in copper turbulators ?