Buck Hedges Posted January 1, 2014 Share Posted January 1, 2014 I've seen different posts where people quench their blades in peanut oil, canola oil, or various other oils onions, or brine. In my shop, I have 8 gallons of used motor oil. I've used to to harden several blades and a few tools and it works, other than the black scale it leaves behind. My question is: Does the type of oil matter? Is vegetable oil versus motor oil any better or worse? Why do we warm the oil up first? If the idea is to cool the steel, wouldn't we want cooler oil? And if a man was to make his own brine, what ratio of water to salt would he need? And would iodized or water softener salt work? Truth simply is. Whether you like that truth or not is totally irrelevant. https://www.facebook.com/StormsForge">https://www.facebook.com/StormsForge Link to comment Share on other sites More sharing options...
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