which steel for small jeweller roller?
hello, i need to make a couple of these rollers for use with gold and silver. i am not sure which steel would be best, my fitter friend said to use a mild steel and then case harden the edge, i am just worried any heat treatment may distort it as there is a keyway, should i go with that option or use a medium carbon steel without any heat treatment? this would be done on a lathe. cheers for any advice.https://uploads.tapatalk-cdn.com/201...30bbf27283.jpg
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