If you have a finished piece like a necklace and only want to work harden certain parts, or it is too large to fit in the tumbler, then hammering with a rawhide or nylon mallet will be the better option; each of these will harden the metal yet not mark it. Using a mandrel to maintain the shape of the piece while hammering is also recommended. After hammering, you can work the wire with a burnisher to harden even further with the extra advantage of shining the silver.
Tip: Starting your design with half-hard wire can reduce the need to further harden your sterling silver.
- Michelle Wood, Jewelry-Making Expert
Products sold by Fire Mountain Gems and Beads® are intended for experienced jewelry-makers and designer-artists; children 14 years of age or younger should use these products with adult direction.
Fire Mountain Gems and Beads, Inc. - One Fire Mountain Way, Grants Pass, OR USA
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