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If you would rather refrain from doing this by yourself, there are numerous businesses that will do the heat reward service for you. Hold the metal with a pair of metal tongs. By backyardsmith, October 20, 2006 in Heat Treating Knives, Blades etc. If your blade starts to glow yellow, it’s too hot. For O1, hold it in there for another 4 minutes or so. When this procedure is total the steel is incredibly difficult however extremely breakable. Most agree that the steel really needs to be cooled off at a high rate, like 1 to 2 seconds and, that is absolutely true. Your email address will not be published. Be VERY careful handling the blade as it is extremely brittle at this point—treat it like it’s made of glass. Once it’s submerged, swish it slowly side-to-side horizontally as it cools. Hi folks. A recommended heat treatment would be 1850-1900°F for 30 minutes, plate quench, cryo, and temper 300-500°F. The basic process is as follows: heat your forge up to the critical point for your steel (+1450°F depending on your steel). The steel has a high chromium content (11 to 13 percent) and relatively high amounts of molybdenum (.7 to 1.2 percent), vanadium (1.1 percent), cobalt (1 percent) and other elements. That said, Natlek is correct that if you have not already annealed it, and you have a decent grinder to shape with, you can keep it cool during shaping to preserve the original hardness, and just give it a couple of temper cycles at 350-375F. I just started playing around with knife-making with some truck leaf spring.I think I have the gist on how to quench and heat-treat for a serviceable knife (time will tell).A Marine friend of mine asked if I could make him a SUPER HEAVY EOD-style knife. Final note: heat treating your steel is meant to harden it significantly. Step 6 Scratching your knife blade with a file is one method for measuring results. This site uses Akismet to reduce spam. Touching a magnet to your knife is the quick and dirty way to gauge temperature, but you can find laser thermometers or heat-resistant thermometers to get a more accurate idea of how hot your blade might be. Having a bigger window for success means you can do this with simple tools and still get a good result. Other steels like the 1095 can be quenched the second they hit critical. Don’t stick the blade in all at once though. Heat-treating D2 tool steel involves multiple steps. Learn how your comment data is processed. For 1095 steel (as this blade is), this occurs at a temperature above 1335° F. ​​​ We first normalize the blade by heating it to a non-magnetic capacity. To heat treat steel, I heat it up beyond “cherry red” to glowing red. On this website, you will see many hundreds of defined knife terms, detailed descriptions and information on heat treating and cryogenic processing, on handles and blades, on stands and sheaths, and on knife types from hunting and utility to military, counterterrorism, and collection. You must refer to the directions for heat treating your particular type of steel. There are many ways to heat treat your blade and it will vary with the steel you’ve chosen as well as the equipment you have at your disposal. A search for "Don Fogg heat treat drum" should bring up a good few hits. Quenching is the process of rapidly cooling down your knife. That said, it’s also going to make it a lot harder to file or sand down, so make sure you’re happy with your knife before you treat it. Heat to 1500, soak 10 minutes. The extra carbon makes heat treating more complex. When the steel hits that golden straw color, you know you nailed it. Heat the metal to non-magnetic (the critical point). He said it should be heat treated like W-1. Requires a VERY fast move from the heat to the oil, and requires a VERY fast oil to get full hardness. Try Google-ing “heat treat knife your city” and go from there. There are 2 or 3 guys who have used my HT forges to make knives to sell while they gather the money to upgrade to an electric HT oven. ALL RIGHTS RESERVED, Essential Knife Care and Maintenance Tips, The Only Article On Knife Grinds You’ll Ever Need, The “Patina” Explained and a Guide to Do It Yourself. That said, use this as a guide to heat treating, but not a verbatim blow-by-blow. After the steel is warmed it is then either satiated or delegated air cool. It is not yet appropriate for use as a knife. Farner now runs the heat treat department, as well as serves the custom knife makers. 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