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

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