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The term "work hardening" refers to the compression of a metal to make the metal harder. If you don't have a tumbler to tumble your finished ear wires, use a rubber or rawhide mallet on your bench block to work harden the ear wires. Rubber hammers harden the wire without flattening it.
By Ruth Rainey. Reprinted with permission from the February 2011 Cobb-L-Stones Newsletter.
