Quote:
Originally Posted by 1maxdude
Hey, you should probably toss your newly hardened gears in your oven at home and leave them in there for 2 hours at 400 deg. or so. Right now they are probably pretty brittle and you wouldn't want to start shearing off teeth.
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to remove the brittleness you need to temper the gears after you harden them, also quenching in water causes a fast temp drop which gives the you the hardest result but makes it the most brittle and gives you the highest chance that you will get warping...in the past I have heated parts to about 1500 degs and than quenched in motor oil, I than brush off the carbon residue and reheat to about 500 degs to temper
here is a link to help explain the hardening process
http://www.armourarchive.org/essays/...treating.shtml