Well tapping holes by hand ,Tapping M4. Not easy ..
end result
only 1440 holes to do ....
there are going to be a few marks on the rads (little scratches) how ever im doing my best to avoid them as much as possible. Just hope my tapping set holds up to doing this amount. Im going to supply enough screws to do push pull in M4 but only for normal fans not slim line ones.
Im not going to tap the side mounting holes.









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