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Old 03-07-2006, 05:55 PM
Dave Bross Dave Bross is offline
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Join Date: Apr 2002
Location: Archer FL(near Gainesville)
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Dudley used to hand out a sheet of color recipes to match SP87 in his classes. Here's the copper ruby recipe.

19 pounds color base batch (no oxidisers)
60 grams red copper oxide
100 grams white tin
100 grams zinc oxide
60 grams borax
80 grams soda ash
5 grams sugar.

Of course you'll have to test and tune to get it to match when melting in your equipment.
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