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Heard a guy at the scrap yard say he never tempers his leaf springs
I was picking up some 5160 last week and this older smith was telling the yard guy he just quenches and goes, no draw at all. Said they 'self-temper' from the residual heat. I tried it on a small knife blank and it snapped like glass on the first bend test. What's the most stubborn bit of bad advice you've heard passed around like it's fact?
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william_flores7mo ago
Used to believe that myself, heard it from an old timer years back. Tried it on a chopper and the edge just crumbled on some hard wood. That was the day I learned residual heat in thin stock is nowhere near enough for a proper draw. Some of this stuff gets passed down so much people forget to test it.
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the_sandra7mo ago
Yeah I read something similar in a forum post once, where a guy tested it with a temp stick. The edge stayed way too hard and chipped out just like you said. Makes you wonder how many people are still doing it wrong because they never checked.
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rosed326mo ago
People forget to test it" is so true. I was sure that old trick worked until I saw a blade chip the same way.
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