If you go to the youtube channel Robrenz (robin renzetti), first you will get to see a true artist at work. This guy deals in 10ths all day long. In one of his earliest videos he regrinds and scrapes in Tom Lipton's old precision level. There are engravings and he restores those by mixing "carbon black" (whatever that is) with epoxy. At least I think it was that - go check it out. He answers comments so if you asked he would get back to you. An amazing channel but you might want to quit after seeing his work. He is a toolmaker's toolmaker.
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