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| Temper steel dowel pins |
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| Lew_Merrick_PE:
John, Here in the U.S., plain steel cylindrical dowel pins are most commonly LC steel that has been case hardened. You may be able to reconstitute the case by heating & quenching, but that would be drawing to an inside straight. Stainless steel cylindrical dowel pins are either (Austenitic) hard drawn, (Martensitic) hardened & tempered, or precipitation hardened -- making home retreating a crap's shoot at best. The problem with a reconstituting a case hardened part is that the heating for hardening often (usually) dissipates the carbon (decarburizing) to surrounding areas reducing the ability to get a hard surface. |
| chipenter:
Hi John I bought some H S S drill blanks ages ago have soffend some bent and retempard them , coat them with likuid soap berore heating stops them going black , I quench in used engine oil that I use for oil blacking (the price is right) , looking forward to the video . |
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