This section is from the book "The Tinman's Manual And Builder's And Mechanic's Handbook", by Isaac Ridler Butt. Also available from Amazon: The Tinman's Manual And Builder's And Mechanic's Handbook.
Fuse 8 ounces of copper and ½ ounce of neutral arsenical salt, with a flux made of calcined borax, charcoal dust and powdered glass.
 
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