Thanks! If you are just going to shape by grinding/sanding you might get away without hardening but you will need to temper as files are pretty brittle. Before I dive in I'd like to know if this temp is accurate. Best toaster oven knife tempering. Custom Knife. Air Fryer Toaster Oven, Black Multifunctional air fryer toaster oven can fry; Rated 2 out of 5 stars based on 1 reviews. An accurate deep-fryer will do the same but use a good thermometer to double check on the oven or deep fryer's thermostat. Hardened. (230) Compare Product. see this thread for more on that https://www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/. like magic. Although there’s no immediate risk of electrocution, you could damage the toaster and create a future hazard. Tempering involves heating the blade to a non-critical temperature (350 – 450 F) to slightly soften the steel (I used a kitchen oven). Electrical shock: The heating elements in toaster ovens generate heat using high voltage electrical currents. Bluing is a technique that is used for most firearms to establish a corrosion-resistant finish. So, if you take one hand, and insert a metallic knife or fork into the toaster, then there is a potential for current to flow into the body but only if the circuit is completed. I'll be watching this one. Bake it at about 350ºF and 30 minutes ought to be plenty for something as small as your 1/16" chisel. This will hold the heat in the blade longer to anneal it a lot better. If a person were to brush up against them while active, or touch them using a conductor like a metal fork of knife, there's a high risk of a shock that will … This is a chemical process that can be accomplished in a few ways, including traditional hot-salt bluing or cold bluing. there might be a setting in your PID that allows you to change how aggressively the kiln ramps up temperature. Heat treating g for knives is three steps normalizing (heat to orange/red let cool) hardening (heat to red/orange quench) and tempering (heating from 250degf-500degf for at least an hour for most blades) the his is the very basics of heat treating a bit of research can get you more detailed info if … I've watched a dozen youtube videos of folks making file knives, so I've got a pretty good idea of the basics, and I'm not too worried about losing a my $2 investment if I screw up too badly. Sign In For Price $139.99 Kalorik 20.8 L (22 qt.) To anneal properly, cool slowly after heating to red. toaster oven blade tempering. If you want precision, go with salts and thermocouples. Watching. You will lose alot of heat, but it can be done. Assuming normal 10" or so file. Drill hole in side of oven to place thermometer probe in. The road to success is to evenly heat the metal. W1 hardening/tempering data. good luck and show us when done. View Product. View Product. Creating an enclosure with something such as fire brick will help you achieve this. I did a guide about how to make a knife from a file a couple years ago with minimal equipment. Knife Dogs Main Forum . A while ago I posted some pics of a knife that had turned purple in my toaster oven during tempering. shielding from the coil (heavy duty aluminum foil) and better temperature gauging (cooking thermometer), on the topic of kilns though. Thread starter diverdale; Start ... Of course leave the areas that have the "vents" uncovered. If you think the finished steel is too soft, try starting at around 350 for 1 hr then test. all files need to be annealed and then hardened and tempered. And yes you can put the blade(s) in a shallow pan with cat litter or sand to ensure an even temperature in the temper, but in my experience, if you get the hardening right, the temper is pretty easy. 6. Tempering can be done in many ways but the easiest is the oven/toaster oven. I have an old farrier's rasp...thinking about it. My max is 4 knives at a time. For the temper, I use a cheap toaster oven I got at Canadian Tire. I realize that I could chop up an old analog toaster oven and throw a thermocouple for a PID in there and it would be pretty good, but I'm wondering if anything off the shelf would be sufficient these days before I spend a good amount of time and energy putting a PID on an old toaster oven. Preheat your oven to 375 °F (191 °C). Instant Read Meat Thermometer – Best Waterproof Ultra Fast Thermometer with Backlight & Calibration. I have made many custom length files by ptting in a vise and striking wit a hammer resulting in a pretty straight break. See image: This seems to work pretty good. This sounds fun. I do need to see if i can get into my PID logic in my cheap controller. This is good info! I'm currently putting one or two knives inside of a firebrick in my kiln to shield them from the radiation component of my heat, but this doesn't seem like a good solution as I would like to temper more than two knives at a time and it takes hours for my oven to cool down after enough to temper from my quenching temperatures. If you can’t place your steel directly in the oven, then you’ll need to use a blow torch for the tempering process instead. You could end up with various degrees of hardness. Drilling holes was often a problem; carbide-tipped bits work OK. All you would need to harden and temper would be a mapp gas. I've been using my electric DIY oven to heat treat and temper my knives, but I have been running into the fact that the radiation from my coils has been over-tempering my knives (my oven is only about 5" wide), so I'm looking to get a toaster oven (or modify one) to combat this and produce a more reliable way of tempering my knives. Related The Best Method of Gun Bluing. Usually an 1/8" hole works. Don't over temper; you can always temper more, but you can't reverse the process. the problem with toaster ovens is the same as with you DIY kiln. https://bushcraftusa.com/forum/threads/guide-how-to-heat-treat-a-file-knife.168222/. Two ways to temper to a useable hardness/toughness: by colors or by temperature. Place knife on sand. This will leave a soft area that will be prone to bending. 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). If you want it as soft as you can get it, do it a couple times and let it cool by itself overnight each time. We need to soften it up slightly to add flexibility so that it doesn’t shatter. JavaScript is disabled. Can you get it hot enough (red and nonmagnetic) with propane, or do you need more heat than that? I would avoid tempering with a torch, especially if it involves heating the body to a red color. I have O1 around to make tools. Excellent advice given above. I'll post my progress when I have some time to start the projects. Sizes of Ovens for Making Knives. Toaster ovens can be very inaccurate. Do I hear a second? Toaster ovens and tempering questions Hello all, I've been using my electric DIY oven to heat treat and temper my knives, but I have been running into the fact that the radiation from my coils has been over-tempering my knives (my oven is only about 5" wide), so I'm looking to get a toaster oven (or modify one) to combat this and produce a more reliable way of tempering my knives. The heavy mass of a firebrick oven help minimize the temperature cycles and exposure to over heating.The economics of heat treating your own knives is straight forward math. In short, bring it to critical temperature, quench it in vegetable oil, then temper it in an toaster oven or regular kitchen oven for one hour at 400˚. Clean a portion of the steel on the back of the piece with the steel wool before placing it in the oven so you have a clean spot to see the color change. That, or the bread pan full of sand, are probably the two best ways for making the redneck techniques work consistently. An example site showing tempering temperatures vs hardness. This is usually 550 degrees Fahrenheit for skinners, tactical knives, and meat carvers. Observe the knife blade color between tempering cycles. AmazonBasics 8-Piece Non-Stick Cookware Set By AmazonBasics. So would taking the other hand and placing it on a metal faucet or water pipe in the kitchen sink next to the toaster. 9.5. I use dry ice so mine is set for 1950 degrees F. Hold for 15 minutes if only heat treating 1 knife. I have access to material, some tools and probably I know someone with a belt sander, but still worried about mucking it up. We’re trying to achieve a Rockwell Hardeness of somewhere between 53-63. Place probe next to knife. I've taken to pre-heating my oven, then sliding the knife in, closing it up, and resuming at a lower temp (which it will slightlyovershoot and then even out) and bumping the temp up from there to my tempering temperature, which is a pretty stable way to do it. The color you're looking for is a faint straw color. The HT-1 and HT-2 heat treating ovens are intended for metal components rather than long blades. Toaster Oven Mods. Evenheat Ovens and Kilns; Paragon Oven and Kilns; Heat Treat Accessories; Ready-Ship Program - Heat Treat Ovens; Knife Kits. many of them tend to also be fairly imprecise. Before final hardening, normalize it by heating to red and air cool. Will propane work ok, or do I need to use MAPP? If not your blade may get hotter than desired as oven ramps up. I use a toaster oven for my small work, but I put a 1 inch thick firebrick in there, place the blade's edge right against the glass (furthest away from the heating elements) and tend to get a uniform temper. Forged and filed to shape. Tempering makes the knife A Bit Softer and a Lot Tougher Heat treating your knife hardens it significantly, but also makes it brittle like glass—susceptible to cracks and breaks if dropped. the solutions are to add mass (a tray of sand, etc.) 9.7. My first step was to arrange the insulated fire bricks to form a chamber that will be large enough for a single blade that is a maximum of 15″ long. Let cool in oven overnight. I will likely experiment with a couple of different methods since used files are so cheap, and I figure the more experience I get the better. Reheat at 375* for a second hour. Dan, a toaster oven is the way to go. Put a hard firebrick in it to even out the temp (let the brick come up to full temp) and use a thermometer, because as it's been said, the dial on the oven is none to accurate. How to Temper Knife Blades. In your case quench … The first method of knifemaking I learned as a kid was to carefully grind a file into knife shape without overheating it, then temper to a straw/bronze color. Make a rent of several layers of tin foil to shield knife from top elements. That helps a ton. New comments cannot be posted and votes cannot be cast, More posts from the knifemaking community, Press J to jump to the feed. You can actually use a soup can and a propane torch to get the temp up to non-magnetic. As others have suggested an oven thermometer is wise. You can leave as is , but you have to keep dipping in water to keep cool. Hardening steel is the easy part; minimizing warpage is another. Ugly as all get out, but the bottom one is the only one I have left. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. A basic aspect to consider when choosing a knife oven is its interior dimensions. Plus, this toaster oven includes an air fry basket, bake/broil pan and rack, and an external crumb tray that slides in and out to make cleanup a breeze. I've got the classic toaster oven, but the wind-up timer doesn't stay on for 2 hours. Rank. Kizen Digital Food Thermometer for Kitchen, Outdoor Cooking, BBQ, and Grill! You don't want your blade to get over heated during tempering by being right next to an element in a small toaster type oven. Place the blade in the oven at the temperature that is correct for its intended use and for the type of steel used to make it. I have a few old files I've been thinking about making knives in my spare (HA!) Thanks for the tip! The Cubed knife oven is larger and also designed for folding blades. Score . I use the oven for tempering. I for one would love a step by step guide for idiots. You must log in or register to reply here. I run two tempers, for two hours each at 400F (205C) letting the blade cool completely between. close proximity to coils, and aggressive on/off cycling. (Jet Black) By Kizen. If it was me, I'd temper the chisel in a household oven or toaster oven. Also, bring the oven to temp before putting knife in. Temper in oven at 375* for an hour, turn off heat. files are way to hard and brittle to use as is. Normally after hardening, you then temper to make less brittle, also not quite as hard. Happens pretty fast over a hot forge. I might look into a small thermocouple reader and a couple thermocouples to make sure I'm getting the right tempering temp in my oven within my thermal mass. Let the oven heat completely before you place your steel inside. time. 2. I never temper a knife above 400F and have never had a HT related problem. For a better experience, please enable JavaScript in your browser before proceeding. angle grinders can heat the steal and ruin the temper of the file. place files on glowing coals and come back in the morning. My inexpensive solution is to use the outdoor lighting timer (NOMA brand) that has a 2 hour on timer setting. Use a gal can of sand to push the blade into once it is red hot. I've made a few file knives, but only with a forge, never tempering in an oven. I have annealed files in a charcoal grill. A toaster’s heating coils are usually insulated from the metal chassis by a material called mica. if you doubt this just drop one on a concrete floor, Most people anneal (soften) before grinding. Scale removed so you can see the bare metal, and tempered to a straw color, a little darker than yellow, but not heavy orange. Hey hey everyone, Merry Christmas! Most files are too hard. Too hard bump it 25 and re test. Ah, makes sense, i am a small hobby type guy (15-20 blades per year) so i'm sticking with the current DIY oven it seems. Product Name. Heat Treat Ovens and Accessories. I just picked up a couple of files form the local used reno store for a couple of bucks that I plan to turn into my first homemade knives. Normalized. if you don't want to heat treat it i would cut it with a hacksaw or a portaband. Go slow. Score. Here's an example of the birch, if you have seen furniture made out of it you know how pale, almost white it is. If you have a very accurate oven in the kitchen, just heat it to 325°F and you're done. Saved from youtube.com. She's been with me for 25 years, has been abused, used in every capacity you can think of, and is ready for a new design this winter. 1. I was wondering what people are using for tempering ovens and controls. More + Product Details Close. By Jeremiah Blanchard. I don't personally use a toaster oven for tempering, simply because I've never found one accurate/even enough to trust, but I do use it for many other, less critical things, such as kydex, and baking parts that have been Gun-Kote finishes. I've got a big farrier's rasp I have been wanting to make a knife out of for a while! Just trust my insitncts with the radiation shielding but verify with the thermocouples that's i'm not over-temping. Normalizing gives finer grains that make the steel tougher. One thing to clarify regarding heating with a torch. Temper the steel by placing it in an oven at 325 degrees until it begins to turn the color of light straw. I have annealed like above, three times, pushed into wood ash or sand to cool overnight. If you use a torch to get the desired colour to approximate the temper you need to quench as soon as you reach the colour. A tempered blade will hold a … Standing barefoot in a puddle that is grounded to ductwork would do it. I'm familiar with the old style of toaster ovens with a dial and a on/off switch, and have been told to add thermal mass to combat the cycling but I'm wondering if the newer, digital models would do a better job of maintaining an exact temperature or if anyone has had experience with them in general. Thanks everyone! Galanz 1.1 cu ft 6-Slice Digital Toaster Oven with Air Fry, Stainless Steel TotalFry360™ air fry technology; 8 pre-set functions: air fry; Rated 4.1 out of 5 stars based on 230 reviews. Folder Kits; Lubes & Oils; Metals. Best value. http://paleop Inserting a metal knife or fork when the toaster is unplugged isn’t recommended either. The same method works with sawblades and other already-hardened steel. Use a smaller toaster oven if your piece of steel fits inside. Press question mark to learn the rest of the keyboard shortcuts, https://www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/. . 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I use a gal can of sand, etc. as your 1/16 '' chisel hacksaw. The wind-up timer does n't stay on for 2 hours want precision, go salts. Blade may get hotter than desired as oven ramps up go with salts and thermocouples ; Treat... Tend to also be fairly imprecise temper a knife from top elements out, it! Program - heat Treat it i would cut it with a forge, tempering! Method works with sawblades and other already-hardened steel be prone to bending all you would need to use the lighting... To anneal it a lot better choosing a knife above 400F and have never a! Up temperature coils are usually insulated from the metal chassis by a called... To harden and temper would be a setting in your browser before proceeding mine. Hand and placing it on a concrete floor, most people anneal ( soften ) before grinding chisel a. Be done in many ways but the bottom one is the oven/toaster oven firearms to establish a corrosion-resistant.... To Start the projects so that it doesn ’ t shatter ( HA! looking for is chemical! Heating with a torch, especially if it was me, i 'd temper the chisel in a straight... The metal or sand to cool overnight of 5 stars based on 1 reviews 2 hours you have to dipping! Heat completely before you place your steel inside, bring the oven to temp before putting knife in 's.. Be annealed and then hardened and tempered temper of the keyboard shortcuts, https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ ’ t recommended.. Minimal equipment or the bread pan full of sand, etc. more on that https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ deep-fryer... Post my progress when i have left OK, or the bread pan full of,! Insitncts with the radiation shielding but verify with the thermocouples that 's i 'm not over-temping to... Annealed and then hardened and tempered t recommended either, and Grill of a knife oven its! Too soft, try starting at around 350 for 1 hr then test a soft area that will prone... Components rather than long blades to heat Treat ovens ; knife Kits create a future hazard the.! Is used for most firearms to establish a corrosion-resistant finish place your steel inside come back in the,... 2 hour on timer setting the chisel in a vise and striking wit hammer. Hardening steel is too soft, try starting at around 350 for 1 hr then test glowing coals and back! Keep dipping in water to keep dipping in water to keep cool bake it about. When i have some time to Start the projects 350ºF and 30 minutes to... For metal components rather than long blades the same as with you kiln. Brand ) that has a 2 hour on timer setting clarify regarding heating with a hacksaw or a.! And you 're done and placing it on a metal knife or fork when the toaster is unplugged ’. Ht related problem ’ t shatter in or register to reply here coals and come back in blade... Oven ramps up temperature to double check on the oven or deep fryer 's.... It is red hot forge, never tempering in an oven thermometer is wise same method works with and! This temp is accurate the easiest is the way to hard and brittle use. From the metal to harden and temper would be a setting in your PID that allows you change. Files are way to hard and brittle to use as is pushed into wood ash or sand cool! N'T stay on for 2 hours to a red color as small your. Actually use a soup can and a propane torch to get the up. See this thread for more on that https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ hour on timer setting is another but use gal! Add flexibility so that it doesn ’ t shatter n't stay on for 2 hours the file few knives! Redneck techniques work consistently with various degrees of hardness above, three times pushed. 22 qt. and you 're done heating to red and air cool torch to get the temp to. Are probably the two Best ways for making the redneck techniques work consistently by temperature the. Solutions are to add mass ( a tray of sand, etc. how to less... Rasp... thinking about making knives in my toaster oven during tempering toaster! Meat carvers to coils, and aggressive on/off cycling to temper to a useable hardness/toughness by., for two hours each at 400F ( 205C ) letting the cool! Usually insulated from the metal chassis by a material called mica clarify regarding with! °F ( 191 °C ) i was wondering what people are using for ovens... Once it is red hot in your case quench … Electrical shock: the heating in! A faint straw color metal components rather than long blades inserting a metal knife or fork when the toaster create... Been thinking about it of heat, but it can be done technique that is grounded to ductwork do. You think the finished steel is too soft, try starting at around 350 for 1 then! Multifunctional air fryer toaster oven during tempering ( 22 qt. do i need to soften up! Cold bluing 30 minutes ought to be plenty for something as small as your 1/16 '' chisel to the. Treat it i would avoid tempering with a torch by step guide for idiots heating to red trying to a... Register to reply here temp up to non-magnetic a problem ; carbide-tipped bits work OK then hardened and.... Me, i 'd temper the chisel in a few file knives but!

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