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Vent: tried quenching in canola oil and got a blade that looks like a banana
So I finally got around to heat treating a 1084 hunter I've been working on for two weeks, and against my better judgment I tried canola oil instead of my usual Parks 50 because a guy in a Facebook group swore by it. Pulled the blade out and the thing has a curve you could hang on a wall, plus the edge is soft as butter when I tested it with a file. I'm pretty sure I went in at too low a temp and the oil just couldn't keep up, but now I've got a warped blade and a fresh respect for the guys who make this look easy. Anyone here ever save a warp this bad or do I just start over from bar stock?
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juliam4021h ago
My buddy did the same thing last spring with a 1095 camp knife and canola. He had this thing looking like a boomerang after the quench, and the edge was so soft he could file it like mild steel. What saved him was a trick he read about: he clamped it between two thick steel plates with a shim in the middle of the curve and stuck the whole thing in his tempering oven at 400 for two cycles. Took it out, let it cool slow, and about 80 percent of the bend came out. The rest he fixed with a brass hammer and a few light taps on the spine while it was still warm. Worth a shot before you scrap it.
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