Quote:
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Originally Posted by Cathar
Blocks bases are professionally machine lapped this time on a proper lapping machine. No hand lapping involved. Extremely flat, especially around the CPU contact area (defined as a 1.5"x1.5" square centered in the block), and outside of the abilities of my machinist's best physical tools to measure which are good down to around 5 microns or 0.0002".
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Ooops guess I searched too long lol