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I Forge Iron

meltymanart

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  1. A few years late to the party but almost every knife and axe blade I've made has been made from an old Nicholson file. When I first started trying to heat treat my blades I quenched in motor oil and could rarely get my file to skate without doing multiple quenches. I did more research and found that Nicholson files are basically made from W1 tool steel, which is a water or brine hardening steel. Now when I quench I either do a very quick initial quench in the oil (maybe 2 seconds) before a full quench in hot water, or go directly into very hot water. This ensures a perfectly hardened blade and I've never had a blade crack on me. If normalized and forged properly warping is not common, though if you do have a warp after the quench you have much less time to correct it than a standard oil quench, I learned this the hard way. I love Nicholson files for blades, they are extremely resilient to damage and wear.
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