Is there an additive in synthetic? Oil is extremely popular in blacksmithing because of its ability to transfer heat slower and superior compared to water. In regards to knife-making, the recommended temperature for heating is between 1475-1500℉ (800-815℃), of course, depending on the type of steel. They come in 5 gallon buckets and are availible from any good restaurnt supply company. This website or its third-party tools process personal data (e.g. It is just water, detergents, and salt, so it isn’t a hazardous material. For any steel below 1040, or below .40 points carbon, I use Super Quench, which is a screaming fast quenchant developed at Lawrence Livermore Laboratories. Many "special recipes" for quenchants have been used over the centuries; "Sources for the History of the Science of Steel"  C.S.Smith, has a listing from the renaissance each one promising to make your steel harder and whiter---including radish juice, cockroach water, snail water, etc. Anything above low carbon steel it will destroy as it is WAY too fast. I missed the part where you specifically asked about veggie oils. The blade is out of the forge, now it is time to quickly plunge the blade in the can of oil or water. Sometimes this cannot be avoided, so expect this when quenching the end of a big tool, or edge quenching a blade. preheat to 150 deg.

By Besides health issues, motor oil is not the right quench speed for blade steels, at least. Works like a champ.

Vegetable oil seems a bit easier. If you wish to get a better idea of what is in used motor oil, send a sample to an oil analysis center. Open to all suggestions.

The guys are right, you will find heavy metals, sulphur and such. Climate may make a difference too. It is my go to quench for HC marked railroad spike knives, or if you want to make mild steel into a spring. In addition to that, oil quenching results in less distortion and metal cracking due to cooling the material evenly. You’ve been warned. The best bet is to heat the oil often and add some rosemary sprigs to it, and to change it out when it goes really bad. its use for a long period of time, especially at high temperatures. That is sodium chloride. Clear editor. This oil is an ideal choice for hardening and tempering blades and other metal crafts. Ahh.

i have been using etra virgin olive oil for a about to years and as thomas said by keeping a lid on it it will last a long time. : 72, bluehost: 0,…..uenchants/. Although there is greater variety in oil types for quenching, it is not a very sustainable liquid and its costs are higher than those of water or air-quenching, however, it’s quickly becoming one of the most popular quenching media for blacksmithing, especially for steel rated for oil hardening used in blades and tools.

So, like a lot of other things, it’s not quite a qualified “yes”, but requires experimentation. As long as we are above our shoes, We know where we are. The bottom line: if you want uniform and good results, choose one type of steel and systematically explore different quenching liquids and their initial temperatures; and also find a way to standardize the quenching temperature of your steel. Don't use motor oil. A word of caution here:  Don’t make the mistake of leaving the legs of your quench plate/table sticking out above the top of your quench tank, as this will prevent you from being able to use the tank lid to smother a flaming quench tank fire. Simply put, blacksmiths quench their material to harden the particular metal. Clear editor. Apologies to anyone who was offended. (The 11 second stuff is a little toward the fast end, actually. Oil cools hot steel slower than water cools it. When I was starting in blacksmithing, I didn’t know a lot of things, including what fuel should I use for the forge. It has detergents that absorb water, leading to unpredictable quench speeds. Sounds disgusting now, but 100 years ago sanitation was almost non existent in their small village, so collecting urine to quench chisels was probably thought quite normal. The type of quenchant you'll be using depends on the type of steel you're quenching. What that will do is it will reduce the formation of air bubbles around the steel. Moderators: Steve McGrew: 77, N.W.B.A. This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies.”. Magic, simple water.

AAA quenching oil is the most … Cookies help us deliver our Services. In order to steel to harden, it requires cooling below 900 degrees in 2 seconds but that does not mean you should take the blade out then. Frosty the Lucky. for a beginning smith to assimilate when he/she just wants to make a couple of knives, or harden a punch.

:happy: I have a question about quenching oil, and since this topic is about that, I figured this would be the best place to ask so. You can extend the life of them by adding lemon juice or viniger, but then you have water in them and that is dagerouse when you add heat. Make sure to have a cover in case it catches fire and to prevent your oil from becoming contaminated with water.

× Just wondered if anyone else had come across this, whether there was merit in it or just another ancient activity like blood letting and leeches that have no scientific basis. Glenn, McMaster also has a 28 second oil, which very well might be fast enough for 4140 and 5160. The hotter the quenchant, the slower the cooling process is.

I never quite figured out whether the so-called "contaminants" are supposed to come from the engine, the gasoline, or the additives that are put in the oil itself. Read below more about each one: 1. The bad thing about motor oil … Don't use motor oil.

Learn more about us. We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. Metallic contaminants will stay in the oil when used for quenching but organic contamination can become volatile when hot steel is submerged in it making it a hazard. Paste as plain text instead, × Please order a gallon of 11 second quench oil from Mcmaster Carr.

Can you add something to make it not go rancid? Steve. If you have You definitely do not want fumes from any of this stuff in your lungs or on your skin! The most popular types of quenching media for blacksmithing are the quench oils (vegetable, motor, mineral), water, and compressed air.

Does used car oil make decent quenching oil?

Most commonly, water or oil is used for these purposes. My mother was trained by her father back in the late 1940's, who in turn had been trained as a stonemason just after the First World War - I guess people were still doing things as they had done for centuries. are often added to allow easy cleaning of the metal after quenching. I’ve heard it has a lot of carbon in it, and I was curious if that would change the steel when it is quenched in it. Most say to stay away from used motor oil because of the contaminants picked up (presumably) from the wear and tear of the engine parts.   Pasted as rich text. What my student has learned is that you don't want a read hot piece in the tank generally as they you have to wait till it cools down They make heaters for chemical uses that go outside the tank---but what about a simple bain marie---hot water bath? Quenching is

The dimensions of container highly determine the rate of cooling in the quenching process. Since I see a lot of questions regarding the ideal anvil size for knife making, I decided to... What Is the Best Fuel for a Blacksmith Forge? Different oils provide different cooling rates.

9 Common Blacksmith Terms. I'm trying to remember how many years my veggie oil has been in the tank---it doesn't stink---yet. You can post now and register later. Let’s move on. I’ll be sure to take your words into account in the future. It is generally recommended to stay somewhere about 10-15 seconds in the oil. Also, be sure to use a non-flammable container. When I was looking for quenching oil, it was available in 45 gal drums or by the rail car load. A subreddit dedicated to the ancient art of blacksmithing. If you quench in water, you’re likely to crack a steel piece that requires slower cooling. Took him to heart. I get that you use what you have, im all for that. No problems thus far... use what ya got..i have used motor oil but this years flavor is non foaming hyd oil it's about a 32 vis in it's cool state so i heat it to 130+- and have used it for 4-5 years but..i have it in a 3" cut off drive shaft so it's not alot of volume so a 5 gallon can will last a long time, How about atf mixed 4:1 with deisel to knock down the flash point. In general they break down to the basic Oil, Water, Brine categories---blood can be considered a weak brine for instance. No one mentions water, I suppose because it is assumed to be harmless, however since motor oil is higroscopic, the water content would play a role in the quenching properties, that is, the more water the faster the quenching if compared to proper quenching oil ... or French Wine. Since then, All Rights reserved., Here Petrofer provides a summary of the various quenchants we offer, Monster Metal Shop Fire :: Northwest Blacksmith Association, Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. Recyceled Fry Oil is a common quenchant. Through proper formulation Boiling is the second quenching phase, also known as the fastest phase of quenching. Well it would depend on what alloy you need to quench; some alloys you quench in oil and they won't harden. The guys who deliver heating oil can tell you who to call if they don't carry it. This allows  convection currents to move hot quenchant up and away from the blade, and cooler oil from below to flow up and speed the quenching process. e also forms ammonia, and that dissolved ammonia cuts grease big time. You would not want to quench and have a fire that would be extremely difficult to extinguish. Keeping a lid on it helps---less oxidation and keeps the critters out of it.

In addition to that, oil quenching results in less distortion and metal cracking due to cooling the material evenly. So they'll last a lot longer. Paste as plain text instead, × thanks the question though was does it matter if i use synthetic motor oil or does it have to be the "real oil" motor oil. My oil is about three years old and still clear.