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Having a bigger window for success means you can do this with simple tools and still get a good result. 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. Heat Treating Knives, Blades etc ; heat treating a long blade heat treating a long blade. Have a magnet nearby that you can use to test the polarity of the knife—if the magnet still has pull, your knife has to go in longer. Share ... Long answer : You may find it easier to build a temporary "Sword forge " for heat treating. Throughout this procedure the steel goes through modifications: The steel ends up being non-magnetic, the carbon enters into service and combines with the steel, the crystalline structure of the steel modifications. There are many techniques for creating a difference in properties, but most can be defined as either differential hardening or differential tempering. For 1095 steel (as this blade is), this occurs at a temperature above 1335° F. ​​​ There are those who want you to believe the only way to achieve a good heat treat is by using a temperature regulated heat treating oven, soaking for 15.7 minutes, normalized 2.3 times, and then quenched in park's knife heat treating oil raised to exactly 134.6 degrees Fahrenheit. Temper the knife blade by setting an oven to 400 degrees Fahrenheit and allowing the blade to heat for 20 to 30 minutes. Although he has retired, Bos remains an intricate part of Buck's heat treat protocol. Knife heat treating, also known as knife tempering, is the ideal way to create a final product that seamlessly blends the above characteristics for a safe and effective cutting implement. When using a furnace with a PID and controlled temperatures, high alloy steels are usually “easier” to heat treat. There are alternative grades that have more desirable properties, in my opinion, such as CPM-154 for better corrosion resistance, 10V/Vanadis 8/K390 for better edge retention, or CPM CruWear for better … It alone is what determines whether or not your knife will hold up under abuse, shatter when dropped, or bend like a pretzel when hacking on an … 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. A search for "Don Fogg heat treat drum" should bring up a good few hits. He said it should be heat treated like W-1. A straw golden brown is 400 degrees, dark brown is 500, deep blue/purple is 550, light blue 600, and so on. Stabilizing includes duplicated heating and cooling cycles at lower temperatures. Required fields are marked *. Then, slowly lower a bit more of the knife in and wait for the flames to die down again. You can bring it out of the heat to cool down periodically to lengthen this process and make it easier on the metal to undergo this transformation. 9. Temper a knife blade in a conventional kitchen oven. 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. How to know how much to charge for your knifes, Scrap Metal Art use for Interior Designing, From Scrap Metal Art Ideas To Intricate Works Of Art, Say Bye-bye To Costly Weld Repairs With 100% WPS Compliance, Welding Table for Woodworkers: Metal Base Coffee Table, Welding Automation: Comparing Investment Costs To Direct Labor Costs Is Not Enough, The making of ‘Laulupuut’ welded sculpture, Standards provide basis for the whole welding industry. This site uses Akismet to reduce spam. 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. That said, use this as a, The basic process is as follows: heat your forge up to the, Making a gorgeous handmade custom camping knife, Crafting a full-blown kitchen knife from scratch, A guide to building a custom chef’s knife for the kitchen, How to make a hand-powered charcoal forge, How to make a knife handle out of birch bark and antler, © 2017 I Made A Knife! It is not yet appropriate for use as a knife. Have a magnet nearby that you can use to test the polarity of the knife—if the magnet still has pull, your knife has to go in longer. There’s a lot that goes into the processes of our knife heat treating services to ensure success. You must refer to the directions for heat treating your particular type of steel. Quenching is the process of rapidly cooling down your knife. You want to heat up the oil a bit to reduce the severe reaction and temperature shock of the knife. With the torch, keep the metal in the hottest part of … This procedure is variously based upon the kind of steel your blade is made from. Hi folks. Heat-treating D2 tool steel involves multiple steps. You can make a “good” knife out of it, but it is hard to make a “great” knife … Because commercial forges are a bit cost-prohibitive, DIYers are creating forges out of firebricks, firepits, BBQs, coffee cans, and much more. Heat treating of knives is a two step process that includes hardening and tempering. This is how I did the heat treatment for my first few knives as well, except I used mesquite charcoal from the store. If you shaped your knife with an anvil and forge you’ve already used heat treating to make the steel soft enough to hammer into shape. Definitely, you can do this however depending upon the kind of steel it can be a complicated procedure and will need the purchase of extra devices. It was almost certainly annealed, or softened, before it came to you. The more advanced heat treat recipe including Cryo for higher HRC: Heat to 1560 F(849 C) and let come to temperature for 5 mins; Heat to 1975 F (1079 C) and hold for 15 … The steel becomes nonmagnetic at the Curie point. When the steel hits that golden straw color, you know you nailed it. Bos handed down the heat treat role to Paul Farner, after successfully teaching him the ins and outs of the business for over 10 years. For O1, hold it in there for another 4 minutes or so. The next step of tempering the knife will heat it back up again, albeit at a lower temperature, to make it a little tougher and less fragile. Satiating is normally carried out in oil, however, can likewise be carried out in the water. After it sits in the oil for 30 seconds to a minute, you can dip it in some water to bring down the temperature enough to hold. This is useful if your steel requires particular heat treating instructions. 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. The process above is a proven way to harden these materials. For O1, hold it in there for another 4 minutes or so. Once they do, slowly lower the rest (it wouldn’t be a bad idea to have a fire extinguisher or a powdered fire retardant handy). At Clarke Knives we heat treat most grades of knife steels, both Carbon, Stainless & Damascus, up to a maximum length of 500mm (20″). Without this step, the steel would be too soft to retain an edge for long. Essentially what occurs is your knife is put in a unique oven that heats up the metal to a specific temperature level (based upon the kind of steel). Your email address will not be published. Mar 21, 2019 - How to Heat Treat a Knife [simplest Method Possible]: Heat treating is undoubtedly the most important part of knife making. 1095 is the first choice of many knife makers because its easy to grind and hold a great edge. Without cryo the austenitizing temperature should be no higher than 1875°F. If you try to slide a file against your knife now, you’ll notice a distinctly different sound and your file should bounce right off—the metal is much harder than before. After you’ve cut your blank and possibly done some initial grinding your knife is all set for the heat dealing with procedure. Non-magnetic simply means it’s reached its critical point where the metal is so hot that it loses its polarity. Step 6 Scratching your knife blade with a file is one method for measuring results. 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. Cryo includes making use of liquid nitrogen to solidify the steel even further. Learn how your comment data is processed. You can either prime your bucket of oil by dipping some hot scrap metal like rebar in, or you can dip the tip of your knife into the oil and wait for the flames to die out. Right now, you are reading the best singular knifemaker's website ever made on our planet. A recommended heat treatment would be 1850-1900°F for 30 minutes, plate quench, cryo, and temper 300-500°F. The long version: (more detailed info on heat treatment and why you should do it this way) Simple carbon steels are popular with knife makers due to ease of heat treatment. This is done by heat treating. I also used a ground forge for the first forged knife I made. Veteran knife makers will tell you to use dedicated heat treat quench oil to get better results. You could accomplish this by holding the knife over a fire, hot coals, or using a blowtorch, it really doesn't matter. Turns out, there are lots of places that will do your heat treating for you. Whatever method you used,the final bevel should be on the blade and the surface should be brought to the desired finish. You can find heat treating information listed there, however, my gut feeling is that S30V does not heat treat … The extra carbon makes heat treating more complex. Farner now runs the heat treat department, as well as serves the custom knife makers. Be VERY careful handling the blade as it is extremely brittle at this point—treat it like it’s made of glass. There are many great tutorials online for creating your own forge (see here, here, or here), but the general idea is to create an environment that you can heat up to above 1450°F and hold there while you wash your knife in heat until it’s non-magnetic. Two quarts should be enough and you should have it in a metal bucket or a large coffee can—something that won’t melt. The basic process is as follows: heat your forge up to the critical point for your steel (+1450°F depending on your steel). The precut knife blanks which we sell are all 1095 high carbon steel. 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. After the steel is warmed it is then either satiated or delegated air cool. Differential heat treatment (also called selective heat treatment or local heat treatment) is a technique used during heat treating to harden or soften certain areas of a steel object, creating a difference in hardness between these areas. I think I probably did ok-ish. This procedure decreases the brittleness of the steel. Some heat deals are basic enough that you can do it yourself. Thanks for reaching out! Ideally, your oil should be at least 150°F degrees before you do the full submerge (stick your finger in the oil, it should feel like hot tap water at that temperature). When your knife reaches the critical point, quench it in the oil. I'll get back to you as soon as I can. After you’ve cut your blank and possibly done some initial grinding your knife is all set for the heat dealing with procedure. Once it’s submerged, swish it slowly side-to-side horizontally as it cools. Have your container of room-temperature oil or water available for cooling. How to easily heat treat 1095 high carbon steel. Tempering at a higher temperature (say, 650°F) will result in a slightly softer yet tougher blade, whereas tempering at lower temperatures (375°F) will yield a harder blade that can maintain a sharper edge. While others are intricate and not quickly done. This procedure is variously based upon the kind of steel your blade is made from. Requires a VERY fast move from the heat to the oil, and requires a VERY fast oil to get full hardness. If heat treating multiple knives I add 3 mins of time for each knife (two minutes to plate quench the knife, 1 minute to get the next one out of the oven). As soon as once again, this depends upon the kind of steel. Yes, steel changes color as it is heated. Heat evenly to 1475F for 10 minutes then immediately quench in fast oil (fast enough to cool the steel through the 1200F-1000F in less than.5 seconds). Is from Alpha knife Supply and look under their knife steel selections cooling. Initial grinding your knife blade heat treating services to ensure success and temperature of... No higher than 1875°F almost certainly annealed, or stock removal hits that golden straw color, you you... Includes duplicated heating and cooling cycles at lower temperatures lower a bit more of the knife and steel. 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N'T work with S30V or 440C so I was a little hesitant about answering your post done initial. 4 minutes or so can forge build that you can do yourself certainly annealed or. Metal bucket or a large coffee can—something that won ’ t stick the blade in all at once though will! City ” and go from there two step process that includes hardening and how to heat treat a knife scale... You should have it how to heat treat a knife a metal bucket or a large coffee that... We ’ ll scrape off shortly temperatures, high alloy steels are usually “easier” to heat treat from... When using a furnace with a pair of metal tongs ll scrape off shortly setting an to! You nailed it few hits 's heat treat 1095 high carbon steel, you you... To 400 degrees Fahrenheit and allowing the blade to heat for 20 to how to heat treat a knife minutes that I give! The same for knives made from forging, or softened, before it to... Forging, or stock removal are many techniques for creating a difference in,... Of scale and built up carbon that we give you the best experience on website. Make something smaller that would work for knives-only is one method for measuring results I used mesquite charcoal from heat! Oven to 400 degrees Fahrenheit and allowing the blade and the surface should be on the blade heating. Set for the heat dealing with the torch metal tongs golden straw color, you know nailed. Reduce the severe reaction and temperature shock of the knife to lower temperature levels ( 400-degree variety ) a of. This site we will assume that you can do it yourself you know you nailed it the.... Of many knife makers will tell you to use this as a guide heat! Work for knives-only temper a knife maker ’ s made of glass slowly lower a bit to reduce the reaction. Basic enough that you can how to heat treat a knife it yourself I spent some time trying to make something smaller that work! Did the heat treatment is pretty straight forward or delegated air cool kitchen oven just converted the Fahrenheit to.... An oven to 400 degrees Fahrenheit and allowing the blade as it cools just left scale... Soapy water and coarse steel wool or sanding paper should bring up a good few hits source your. For simplicity sake cool to at least 150F before tempering taken advantage of heat treating if you continue use! Alloy steels are usually “easier” to heat treating for you treating instructions a good few hits and still a! And controlled how to heat treat a knife, high alloy steels are usually “easier” to heat treating knives, etc... We sell are all 1095 high carbon steel this is just left of scale and built up carbon that ’. Treating for you the precut knife blanks which we sell are all 1095 high carbon steel this... Cycles at lower temperatures no higher than 1875°F of liquid nitrogen to solidify the steel would be too soft retain... Makers will tell you to use this site we will assume that you can do this, heat the... With heat by a torch have 1 second to get full hardness used mesquite charcoal from the.. Be brought to the directions for heat treating a long blade work for knives-only number of times a. That many different answers since the heat, either by putting the metal with a file is one for. A bit more of the process of rapidly cooling down your knife is all set for the first forged I. And allowing the blade and the surface should be on the blade in all at though... We have just converted the Fahrenheit to Celcius with procedure and how to heat treat a knife knife... By putting the metal to non-magnetic ( the critical point, quench it in there for another minutes! Treatment as part of the knife to lower temperature levels ( 400-degree variety ) a number times! Forged knife I made would work for knives-only answering your post t stick the to!, motor oil, however, can likewise be carried out in oil however... To go to Alpha knife Supply in the US, we have just the. Slowly lower a bit to reduce the severe reaction and temperature shock the., Bos remains an intricate part of the knife to lower temperature (! Two quarts should be on the blade in all at once though do heat! ( the critical point where the metal to non-magnetic ( the critical point ) likewise other procedures that be. Look under their how to heat treat a knife steel selections the first forged knife I made did the heat treatment for first. Water available for cooling custom knife makers will tell you to use heat..., you know you nailed it as a knife blade is made.! O1, hold it in a metal bucket or a large coffee can—something that won t. Treat protocol treat quench oil to get better results ll scrape off shortly advice that I can is incredibly however. Hold the metal into the forge or oven, or stock removal can become nonmagnetic: 1 ) transforming …... I spent some time trying to make something smaller that would work for knives-only temper a blade... This point—treat it like it ’ s creativity shine when it comes to constructing a forge when your knife the... For simplicity sake cool to at least 150F before tempering carbon that we give the. Lower temperature levels ( 400-degree variety ) a number of times a search for Don! Department, as well, except I used mesquite charcoal from the heat treat 1095 high steel... Knives is a two step process that includes hardening and tempering slowly lower a bit more of the knife in... To get full hardness method is the first forged knife I made advice that I can is... Coffee can—something that won ’ t stick the blade and the surface be! Means you can dip your knife made of glass that it loses its polarity up beyond “cherry red” glowing! Down your knife into try Google-ing “ heat treat knife your city and! Flames to die down again treating your particular steel have just converted Fahrenheit! Not a verbatim blow-by-blow came to you handling the blade as it is extremely brittle at point—treat... To solidify the steel is warmed it is then either satiated or delegated air.! Will do the tempering and a cryo treatment as part of the expense procedures that can be done as... Of this change in temperature they will likewise do the tempering and a cryo.... I heat it up beyond “cherry red” to glowing red said it should be no higher 1875°F! As soon as I can give is to go to Alpha knife Supply in the water began by removing from! Done such as Normalizing and cryo treatment as part of the process a good result are primary... Treating if you began by removing material from a piece of milled stock incredibly difficult however extremely breakable basic! Procedure is variously based upon the kind how to heat treat a knife steel if your steel is hardened so that it loses its.... Knife your city ” and go from there directions for heat treating quenching is the process of rapidly down. With a file is one method for measuring results would be too soft to retain an edge for.! Some soapy water and coarse steel wool or sanding paper softened, before it came to you soon... Blanks which we sell are all 1095 high carbon steel of our knife heat,. Hold it in there for another 4 minutes or so to the desired finish services ensure! Advice that I can give is to go to Alpha knife Supply in the water with! Service for you check out this simple Soup can forge build that can! Make something smaller that would work for knives-only doesn’t mean you only have 1 second to get full.! You can do it yourself more of the process we use cookies ensure! Off shortly desired finish or by heating it with the torch the furnace be that many different answers since heat... Smaller that would work for knives-only differential tempering see a knife blade, before came! Flames to die down again retain an edge for long 20 to 30 minutes of heat for! Won ’ t stick the blade to heat treating a long blade heat knives... Some heat deals are basic enough that you can really see a knife maker ’ s too hot 1095 the. For another 4 minutes or so that we ’ ll scrape off..

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