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Agreed, I even went to school for machining, milling and drilling where being precise is needed. That's where I first saw a set of gage blocks. So, flat, that when pressed together, no air can fit...

Howard, you take all the fun out of this for people, they're gonna read this and get scared off. I know your from Mass, Have you been hanging around MIT....We are talking razors and hones, not stuff...