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How to Harden Steel10 Steps with Pictures wikiHow

How to Harden Steel 10 Steps (with Pictures) - wikiHow

MethodWarnings Light a propane blow torch to use as a heat source. Open the gas valve near the base of the torch. Hold a striker over the end of the torch and squeeze it to create a spark. The torch should ignite after a few tries. Turn the gas valve to adjust the flame to a small cone shape.[1] X Research source Larger flames produce less heat while smaller flames produce a higher heat. Blow torches only How to Harden Steel10 Steps with Pictures wikiHow Hold the steel directly in the flame. Hold the steel with your non-dominant hand using a pair of meta

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