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https://www.ehow.com/how_5962740_harden-copper-wire-jewelry.html
How to Harden Copper Wire for Jewelry Step 1. Cut a piece of copper wire in the desired length, using the wire clippers. Step 2. File the edges of the wire down as smoothly as possible. Sand them with the 200-grit sandpaper. Then move on to...
https://jewelrytutorialhq.com/work-harden-jewelry-wire/
May 13, 2014 · Work Hardening Methods for Jewelry Wire 1.) Use nylon-jawed flat nosed pliers to pull the wire straight. Try to pull it from one end to the other so that the entire length of the wire …Estimated Reading Time: 7 mins
https://www.youtube.com/watch?v=-yfxx9itQyk
Jan 02, 2013 · Szarka of http://www.magpiegemstones discussed various ways to harden wire, hammering, twisting and discusses tumblers briefly.
https://orchid.ganoksin.com/t/hardening-copper-wire-that-has-been-annealed/44803
You hold the metal at about 600 deg in your oven for, say, 2 hours, then turn the oven off, let it cool overnight to room temperature, then you are done. hardening of metals (well, copper, gold, silver) happens when there is internal crystal structure growth. heating these metals to near the melting temperature, then cooling quickly, prevents the crystal growth formation, which makes the metal soft. …Estimated Reading Time: 2 mins
https://jewelrymakers.proboards.com/thread/200/hardening-dead-soft-copper-wire
Mar 13, 2012 · And to harden the smaller pieces/shapes I hammer them on a piece of thick leather (sometimes before hammering on the anvil - especially the earwires where the wire is thin and must not be completely flattened). Also, the wire hardens a bit if you remove the plastic and just leave it bare and lying around exposed to air. But this takes months
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