thanks BE,
I orderd a cascade but due to demand it's about 4 weeks away.
As i am now working again i wont be doing as much work on the blocks as before but i have finshed a gf4 cascade style cooler today.
just wating for the silicon to set and i test it and of all goes well put it in my system.
How's your project going ozzy ?
was playing with the cross vice today and i drilled a 3 lines of 1.5mm holes with 1mm between them. Then using a dremel cutting disk cut between the holes to make leave WWstyle fins. I would need to refine it some what but it seems easy enough to do.