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Speculum Metal Mirros ( I Must Be Mad.)

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Posted by ian/">ian on August 3, 1998 08:25:08 UTC

I know all the hassles of using a spec. metal mirror but I want to make one largely out of historical curiosity. - Same reason I have small pile of tin ore and charcoal waiting for a dry weekend night when I have nothing better to do. I have the metal and I made myself a 4 inch mould but how do I grind - I was thinking plaster tool or would I be better off using a second blank as the tool. What grades of grit am I going to need - it's very soft metal so I assume it will be easier ( in terms of physical effort) to grind than glass but does that mean I can start from a finer grit?

Ian

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