Quote:
Originally posted by bigben2k
27 fpi is even better. You'll have to re-measure the fin and channel width 
What's the fin height? What parts do (did) you plan on cutting?
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i have cut the width to fit my p4 hold down thats all.
i dont have anything more accurate to measure the fins but they are a little thicker than paper.
fins are 7mm before i lower them.
i intend to make another block the same as my last. 30x30 fin area 4mm high to cover a p4 ihs, but i am sure if i was to try and cut between the fins into the base i would loose most of the fins in the process. so it looks like a long day on the belt sander to get the base down to 1.5mm
i will also use the same squashed copper pipe for an inlet.