Thanks Marty, I really appreciate the informative description of the "Flaking". Like I said before I observed some journeyman machine assemblers where I worked many years ago hand scraping the dovetail slides on a machine. The ways were surface ground first and then the man covered one surface with Dykem ink and placed the slides together and moved them back and forth. This transferred the ink to the other part at all of the high spots. He then used this carbide tipped scraper with a big soft pad on the opposite end to knock down these high spots until the ink was gone and then repeated the process. This is all from memory from a long time ago but I don't recall the goal to be a carving out low spots for lube to gather but rather to go for the ultimate flat surface. These were relatively small dove tail?slides on a line of piston ring boring machines that we built from the ground up for Sealed Power, Muskegon Piston Ring and Hastings on the west side of Michigan.
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