Ralph,
This guy might be a source for faceplates or even an adapter that would go from your 3/4" x 10 to 1" x 8.
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He is the guy who made the faceplates I've shown at the meetings. I think he can do all sorts of machining. The guy whose web page I have mentioned several times, Darrell Feltmate, is:
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He has several articles on making things that are useful around the shop. We talked about his sharpening jigs. Harry