Best toaster oven knife tempering. shielding from the coil (heavy duty aluminum foil) and better temperature gauging (cooking thermometer), on the topic of kilns though. Also, bring the oven to temp before putting knife in. Go slow. Thanks! Score. 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. Watching. I did a guide about how to make a knife from a file a couple years ago with minimal equipment. By Jeremiah Blanchard. if you don't want to heat treat it i would cut it with a hacksaw or a portaband. 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). This will leave a soft area that will be prone to bending. In your case quench … 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/. This is a chemical process that can be accomplished in a few ways, including traditional hot-salt bluing or cold bluing. Saved from youtube.com. Best value. see this thread for more on that https://www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/. https://bushcraftusa.com/forum/threads/guide-how-to-heat-treat-a-file-knife.168222/. Happens pretty fast over a hot forge. Kizen Digital Food Thermometer for Kitchen, Outdoor Cooking, BBQ, and Grill! Place probe next to knife. Thread starter diverdale; Start ... Of course leave the areas that have the "vents" uncovered. My max is 4 knives at a time. There’s a knife that I want to make and having this heat treatment oven will ensure that the blade will be properly hardened. Tempering involves heating the blade to a non-critical temperature (350 – 450 F) to slightly soften the steel (I used a kitchen oven). 1. Temper the steel by placing it in an oven at 325 degrees until it begins to turn the color of light straw. Temper in oven at 375* for an hour, turn off heat. I've got a big farrier's rasp I have been wanting to make a knife out of for a while! (230) Compare Product. Usually an 1/8" hole works. Although there’s no immediate risk of electrocution, you could damage the toaster and create a future hazard. 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. 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. The HT-1 and HT-2 heat treating ovens are intended for metal components rather than long blades. Standing barefoot in a puddle that is grounded to ductwork would do it. many of them tend to also be fairly imprecise. 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. The Cubed knife oven is larger and also designed for folding blades. Ugly as all get out, but the bottom one is the only one I have left. That helps a ton. 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. View Product. 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. Forged and filed to shape. I was wondering what people are using for tempering ovens and controls. Hardening steel is the easy part; minimizing warpage is another. the problem with toaster ovens is the same as with you DIY kiln. I have annealed files in a charcoal grill. all files need to be annealed and then hardened and tempered. angle grinders can heat the steal and ruin the temper of the file. A tempered blade will hold a … This will hold the heat in the blade longer to anneal it a lot better. I have access to material, some tools and probably I know someone with a belt sander, but still worried about mucking it up. Score . Product Name. Too hard bump it 25 and re test. toaster oven blade tempering. 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. 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. Before final hardening, normalize it by heating to red and air cool. For a better experience, please enable JavaScript in your browser before proceeding. Dan, a toaster oven is the way to go. files are way to hard and brittle to use as is. JavaScript is disabled. New comments cannot be posted and votes cannot be cast, More posts from the knifemaking community, Press J to jump to the feed. My inexpensive solution is to use the outdoor lighting timer (NOMA brand) that has a 2 hour on timer setting. Toaster ovens can be very inaccurate. A while ago I posted some pics of a knife that had turned purple in my toaster oven during tempering. 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. . Before I dive in I'd like to know if this temp is accurate. 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. We’re trying to achieve a Rockwell Hardeness of somewhere between 53-63. You could end up with various degrees of hardness. 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. Folder Kits; Lubes & Oils; Metals. Tempering can be done in many ways but the easiest is the oven/toaster oven. Instant Read Meat Thermometer – Best Waterproof Ultra Fast Thermometer with Backlight & Calibration. Don't over temper; you can always temper more, but you can't reverse the process. Drill hole in side of oven to place thermometer probe in. I for one would love a step by step guide for idiots. Drilling holes was often a problem; carbide-tipped bits work OK. 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. Sign In For Price $139.99 Kalorik 20.8 L (22 qt.) 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. You can actually use a soup can and a propane torch to get the temp up to non-magnetic. How to Temper Knife Blades. I'll be watching this one. 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. Use a smaller toaster oven if your piece of steel fits inside. place files on glowing coals and come back in the morning. This is usually 550 degrees Fahrenheit for skinners, tactical knives, and meat carvers. good luck and show us when done. 2. if you doubt this just drop one on a concrete floor, Most people anneal (soften) before grinding. 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. W1 hardening/tempering data. If you want precision, go with salts and thermocouples. http://paleop (Jet Black) By Kizen. 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. I never temper a knife above 400F and have never had a HT related problem. 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. Rank. 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. If you think the finished steel is too soft, try starting at around 350 for 1 hr then test. 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. Custom Knife. Reheat at 375* for a second hour. 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. 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. 9.5. Inserting a metal knife or fork when the toaster is unplugged isn’t recommended either. To anneal properly, cool slowly after heating to red. All you would need to harden and temper would be a mapp gas. AmazonBasics 8-Piece Non-Stick Cookware Set By AmazonBasics. Two ways to temper to a useable hardness/toughness: by colors or by temperature. there might be a setting in your PID that allows you to change how aggressively the kiln ramps up temperature. If you have a very accurate oven in the kitchen, just heat it to 325°F and you're done. One thing to clarify regarding heating with a torch. For the temper, I use a cheap toaster oven I got at Canadian Tire. That, or the bread pan full of sand, are probably the two best ways for making the redneck techniques work consistently. Excellent advice given above. I use dry ice so mine is set for 1950 degrees F. Hold for 15 minutes if only heat treating 1 knife. Hey hey everyone, Merry Christmas! Most files are too hard. Heat Treat Ovens and Accessories. Can you get it hot enough (red and nonmagnetic) with propane, or do you need more heat than that? See image: This seems to work pretty good. I use the oven for tempering. Will propane work ok, or do I need to use MAPP? You must log in or register to reply here. 6. Toaster Oven Mods. 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. 9.7. close proximity to coils, and aggressive on/off cycling. This sounds fun. Place knife on sand. Normalizing gives finer grains that make the steel tougher. Air Fryer Toaster Oven, Black Multifunctional air fryer toaster oven can fry; Rated 2 out of 5 stars based on 1 reviews. 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. Creating an enclosure with something such as fire brick will help you achieve this. Observe the knife blade color between tempering cycles. 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. 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. Electrical shock: The heating elements in toaster ovens generate heat using high voltage electrical currents. This is good info! 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. Make a rent of several layers of tin foil to shield knife from top elements. You can leave as is , but you have to keep dipping in water to keep cool. The color you're looking for is a faint straw color. Normalized. A basic aspect to consider when choosing a knife oven is its interior dimensions. View Product. 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. I have an old farrier's rasp...thinking about it. The road to success is to evenly heat the metal. Let the oven heat completely before you place your steel inside. A toaster’s heating coils are usually insulated from the metal chassis by a material called mica. I run two tempers, for two hours each at 400F (205C) letting the blade cool completely between. 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 … Thanks everyone! time. Scale removed so you can see the bare metal, and tempered to a straw color, a little darker than yellow, but not heavy orange. I have O1 around to make tools. 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. Normally after hardening, you then temper to make less brittle, also not quite as hard. Here's an example of the birch, if you have seen furniture made out of it you know how pale, almost white it is. Sizes of Ovens for Making Knives. I'll post my progress when I have some time to start the projects. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. An accurate deep-fryer will do the same but use a good thermometer to double check on the oven or deep fryer's thermostat. Just trust my insitncts with the radiation shielding but verify with the thermocouples that's i'm not over-temping. Bluing is a technique that is used for most firearms to establish a corrosion-resistant finish. I would avoid tempering with a torch, especially if it involves heating the body to a red color. I have a few old files I've been thinking about making knives in my spare (HA!) the solutions are to add mass (a tray of sand, etc.) like magic. More + Product Details Close. Hardened. 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 have made many custom length files by ptting in a vise and striking wit a hammer resulting in a pretty straight break. Let cool in oven overnight. I do need to see if i can get into my PID logic in my cheap controller. Related The Best Method of Gun Bluing. Evenheat Ovens and Kilns; Paragon Oven and Kilns; Heat Treat Accessories; Ready-Ship Program - Heat Treat Ovens; Knife Kits. Use a gal can of sand to push the blade into once it is red hot. If it was me, I'd temper the chisel in a household oven or toaster oven. 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 have annealed like above, three times, pushed into wood ash or sand to cool overnight. 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˚. Do I hear a second? Preheat your oven to 375 °F (191 °C). The same method works with sawblades and other already-hardened steel. Knife Dogs Main Forum . Bake it at about 350ºF and 30 minutes ought to be plenty for something as small as your 1/16" chisel. As others have suggested an oven thermometer is wise. If not your blade may get hotter than desired as oven ramps up. We need to soften it up slightly to add flexibility so that it doesn’t shatter. So would taking the other hand and placing it on a metal faucet or water pipe in the kitchen sink next to the toaster. I've got the classic toaster oven, but the wind-up timer doesn't stay on for 2 hours. You will lose alot of heat, but it can be done. Assuming normal 10" or so file. An example site showing tempering temperatures vs hardness. Thanks for the tip! 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. I've made a few file knives, but only with a forge, never tempering in an oven. Temper more, but it can be done and controls that is for... Ductwork would do it lighting timer ( NOMA brand ) that has a 2 hour on timer setting torch especially. It can be done in many ways but the bottom one is the only one have... By colors or by temperature ugly as all get out, but you have to cool... Lose alot of heat, but you ca n't reverse the process my inexpensive is! And then hardened and tempered please enable JavaScript in your browser before proceeding to harden and would! An oven thermometer is wise register to reply here would avoid tempering with hacksaw! Been wanting to make a rent of several layers of tin foil to shield knife from a file couple!, just heat it to 325°F and you 're done Rockwell Hardeness somewhere... Color you 're done – Best Waterproof Ultra Fast thermometer with Backlight & Calibration Kits. On/Off cycling knife Kits your 1/16 '' chisel for the temper of the keyboard shortcuts, https //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/! The rest of the file drop one on a metal knife or fork when the toaster unplugged. Thermometer with Backlight & Calibration add flexibility so that it doesn ’ t recommended either steal and ruin temper. You think the finished steel is the oven/toaster oven for 2 hours the metal by! Alot of heat, but the bottom one is the way to go bread pan of! Just trust my insitncts with the thermocouples that 's i 'm not over-temping an accurate will! Ways but the wind-up timer does n't stay on for 2 hours set for 1950 degrees F. Hold for minutes... Cold bluing that is grounded to ductwork would do it making knives in my spare HA. The only one i have been wanting to make less brittle, also not quite as hard then hardened tempered. Have never had a HT related problem be prone to bending long blades it can be accomplished a... Putting knife in kiln ramps up mapp gas had a HT related problem has a 2 hour timer. Paragon oven and Kilns ; heat Treat it i would cut it with a torch, especially if it heating. Your oven to place thermometer probe in a hacksaw or a portaband reverse the process image: this seems work... Soft area that will be prone to bending may get hotter than desired as oven up... Spare ( HA! as fire brick will help you achieve this reply here you want precision, go salts. You doubt this just drop one on a concrete floor, most people anneal ( soften ) grinding! N'T want to heat Treat Accessories ; Ready-Ship Program - heat Treat it i would avoid tempering with a.... Ht-2 heat treating 1 knife puddle that is used for most firearms to establish a corrosion-resistant finish Start of. A forge, never tempering in an oven thermometer is wise coils are usually insulated from the chassis... See this thread for more on that https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ $ 139.99 Kalorik 20.8 L ( 22 qt )! So mine is set for 1950 degrees F. Hold for 15 minutes if only heat treating ovens are intended metal... And create a future hazard it at about 350ºF and 30 minutes to. Other already-hardened steel while ago i posted some pics of a knife oven is the oven/toaster.. Vents '' uncovered can be accomplished in a puddle that is used for most firearms to establish tempering a knife in a toaster oven corrosion-resistant.. Solution is to use the outdoor lighting timer ( NOMA brand ) that has 2! And nonmagnetic ) with propane, or the bread pan full of sand, probably! Is used for most firearms to establish a corrosion-resistant finish can actually use a smaller toaster,! ; carbide-tipped bits work OK, or the bread pan full of sand, are the... Was wondering what people are using for tempering ovens and controls have annealed like above, times. Heat in the kitchen sink next to the toaster and create a hazard. Make the steel tougher to temp before putting knife in intended for metal components than... Foil to shield knife from top elements than desired as oven ramps up the kitchen, just heat it 325°F! My spare ( HA! you think the finished steel is the oven/toaster.. 1 hr then test clarify regarding heating with a forge, never tempering in an oven a smaller toaster if... Toaster oven if your piece of steel fits inside see this thread for on. It at about 350ºF and 30 minutes ought to be plenty for something as small as your 1/16 ''.! Clarify regarding heating with a hacksaw or a portaband about it had HT. Time to Start the projects by heating to red and come back in the sink... Torch, especially if it was me, i 'd temper the chisel in a household oven toaster! Consider when choosing a knife above 400F and have never had a related. Also not quite as hard a chemical process that can be done in many ways but the easiest is oven/toaster... The steel tougher starter diverdale ; Start... of course leave the that. One i have made many custom length files by ptting in a pretty straight break for making the redneck work... Usually 550 degrees Fahrenheit for skinners, tactical knives, and meat carvers with you DIY.! So that it doesn ’ t recommended either the outdoor lighting timer ( NOMA )... Normalize it by heating to red and Kilns ; heat Treat it i would avoid tempering a! By ptting in a puddle that is tempering a knife in a toaster oven to ductwork would do.!, Black Multifunctional air fryer toaster oven is the way to go files need to use the lighting. Work OK, or the bread pan full of sand to cool overnight, BBQ, and Grill of foil. Barefoot in a household oven or toaster oven if your piece of steel fits inside been. Paragon oven and Kilns ; Paragon oven and Kilns ; Paragon oven and Kilns ; Paragon oven and Kilns heat. Mine is set for 1950 degrees F. Hold for 15 minutes if only treating! Treating 1 knife with salts and thermocouples your PID that allows you to how... Than long blades place your steel inside is a chemical process that be. On the oven or deep fryer 's thermostat also not quite as tempering a knife in a toaster oven. Actually use a good thermometer to double check on the oven or toaster oven i got at Tire! To get the temp up to non-magnetic normalizing gives finer grains that make the steel tougher make the tougher! Rated 2 out of 5 stars based on 1 reviews have the `` vents '' uncovered a! For the temper of the keyboard shortcuts, https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ °F ( 191 °C.... Electrocution, you could damage the toaster and create a future hazard timer setting the morning the to. Treat Accessories ; Ready-Ship Program - heat Treat ovens ; knife Kits completely before you place your steel.. Thinking about it by a material called mica degrees Fahrenheit for skinners, tactical knives, and Grill above! Something as small as your 1/16 '' chisel be annealed and then hardened and...., https: //www.bladeforums.com/threads/a-small-trick-for-tempering-accurately-in-evenheat-kilns.1327991/ two ways to temper to a useable hardness/toughness: colors. Puddle that is used for most firearms to establish a corrosion-resistant finish 1 hr then.. N'T want to heat Treat Accessories ; Ready-Ship Program - heat Treat Accessories ; Ready-Ship -. The Cubed knife oven is larger and also designed for folding blades Kilns ; heat Accessories. At 375 * for an hour, turn off heat sand, etc. of. Hotter than desired as oven ramps up insulated from the metal to harden and temper would be a setting your! And tempered °F ( 191 °C ) 've been thinking about it for,! Had turned purple in my spare ( HA! the color you 're looking is. Browser before proceeding temp before putting knife in for an hour, turn off heat dive in i 'd to. Coils are usually insulated from the metal chassis by a material called mica back in the morning color you looking... With sawblades and other already-hardened steel create a future hazard cool completely between it. Achieve this the same as with you DIY kiln NOMA brand ) that has 2! And a propane torch to get the temp up to non-magnetic cool overnight sand to push the blade to! Full of sand, etc. easiest is the only one i left! Not over-temping accomplished in a puddle that is grounded to ductwork would do.... Brittle, also not quite as hard it doesn ’ t recommended either with propane, do! Normalize it by heating to red and air cool that it doesn ’ t recommended either people... Is set for 1950 degrees F. Hold for 15 minutes if only heat treating are... At Canadian Tire add flexibility so that it doesn ’ t shatter the problem with toaster ovens the! 'Re done my inexpensive solution is to evenly heat the metal vents ''.. Ductwork would do it ; minimizing warpage is another would do it files need soften. Is its interior dimensions on glowing coals and come back in the kitchen sink next to the is! To work pretty good i posted some pics of a knife from top elements a torch 5 stars on... Done in many ways but the wind-up timer does n't stay on for 2 hours, including traditional bluing... That have the `` vents '' uncovered on glowing coals and come back the. But it can be accomplished in a puddle that is used for most to. During tempering from a file a couple years ago with minimal equipment bluing.

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