Old info on diamond sharpening
bill tindall
>The library in Berea, KY was having a book fair, $1 for all one could stuff in a bag. I spied a worn copy of American Machinists Handbook, 7th ed, 1941. Located the section on lapping this AM. Other than using acrylic as a substrate I haven't discovered anything new about using diamond and there is much that I haven't yet discovered about lapping. It is all in this book, begining with grinding and sizing your own diamond powder. Interested persons are encouraged to locate this book and read the diamond and lapping section. I will attempt to summarize some of the useful points later, but one stands out. At the end of lapping, wash plate and then do a few lapping strokes on the clean plate. This step removes grits stuck in the tool steel (the dreaded carry over issue we have discussed).
PS the benzine they speak of as a lap lub I think we would call naptha. It is not benzene.
