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I'll double up on that!!

I recently had a full hollow 440c blade that was around 61-63. I accidentally forgot to put it through its second temper cycle. It wouldn't get through one shave then the...

Without knowing the exact steel it's made out of its hard to say what exact temp is needed. But as a basic, heat the file up so its a nice glowing orange (or about 1500 if using the oven) for a few...