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Working in Metals by Charles C. Sleffel
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Learning metalworking, metalcraft.
Metal trade education. Hobbysmith.
WORK IN COPPER: How to Make a Copper Bowl. Chapter III, ch.3, How to Make a Copper Bowl, sheet 20 gauge copper, tools, hardwood block, dividers, shears, round headed hammer, planishing hammer, round top stake, mallet, files, pumice stone
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Working in Metals by Charles C. Sleffel