Stainless steel can only tolerate hot bluing and a limited amount of chemicals. So As one newish to refined firearms ownership, what is the best way to store and protect a pistol or rifle from rusting, especially in areas like Oregon or Washington, Silicon socks, or ? Next comes the main part. Shooting Mystery is an independent website that provides content for informational purposes only. Excellent info. you could also heat this size tank with anything from a hibatchi up to a Weber charcoal grill or you could put it on top of a wood-burning stove or even a kitchen stove. Im talking like 90+ minutes to heat the salt bath to 285F. on Step 1. The colours range through straw, gold, brown, purple, blue, teal, then black. of the steel than do not even try this on something that is anything other than artistic in nature! Friction, as from holster wear, quickly removes cold bluing, and also removes hot bluing, rust, or fume bluing over long periods of use. These work by depositing a coating of copper selenide on the surface. Sorry for the misunderstanding. The rust then turns to black-blue Fe3O4. When youre using hot blueing salts, youd better be on top of your game, or you can seriously injure yourself. Apply heat to your object and heat up gently and equally. You can experiment ultimately what oils to use. Tenifer get's up to (1077F) last I checked and was the 5th step in Glock heat treating after that they Pakerize it. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. Before you start, it might do you well to mark the sight base on each side of the dovetail with a Sharpie marker, so you can see when the sight begins to move. Notify me of follow-up comments by email. In my case I drilled/threaded the metal piece and made a holder with a threaded end. Very true. Cold blueing is OK for touchups, at best. The blue appearance of the oxide film is also used as an indication of temperature when tempering carbon steel after hardening, indicating a state of temper suitable for springs. Hot blueing is a good process, especially if you have a lot of iron to shove through the blueing process quickly. Oil and grease really are the enemy because youre trying to (literally) corrode the metal. This method was adopted by larger firearm companies for large scale, more economical bluing. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. Where/how did you think I got to the point I could make nice guns? "https://twitter.com/Shoot1ngMystery", While still hot and while wearing rubber gloves rub the bluing compound Into the steel with the steel wool. Wear safety glasses and gloves while working with hot metal. the cost of all the tanks you need for rinse & boil-out I have done a cold blue on a very rusted .22 for a friend. They are still sometimes used by gunsmiths to obtain an authentic finish for a period gun of the time that rust bluing was in vogue, analogous to the use of browning on earlier representative firearm replicas. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/81\/Harden-Steel-Step-1-Version-3.jpg\/v4-460px-Harden-Steel-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/8\/81\/Harden-Steel-Step-1-Version-3.jpg\/aid1214287-v4-728px-Harden-Steel-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
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\n<\/p><\/div>"}. I have always wondered about storage in gun soft cases or the foamed Hard cases, and humid or dry, heat and cold. So you said the polishing is key for the coloring process. If you do not get crazy and over heat the steel there is no reason to be fearful of the process. I dont use hot salt blueing because much of my work is on older double guns, which have ribs that are soft-soldered into place. Color case hardening is the predecessor of all metal coloring typically employed in the firearms industry. Fill a heat-safe container with water or oil deep enough to submerge your steel. The parts can often be put together with little or no forces need and friction lock together and the one parts shrinks and the other part expands. This signifies that the steel is tempered. We have all kinds of rifles and shotguns with recievers made from non-Fe alloys again we do not give it a second though or break out the hardness tester. I had to sand and restain the stock, and sanded the barrel from 120 down to 400 grit the pitting was so bad. I think DGs method is a lot safer than mine. 4 years ago Many double-barreled shotguns are soft soldered (lead) or silver brazed together and many of the parts are attached by that method also. Cold bluing is not particularly resistant to holster wear, nor does it provide a large degree of rust resistance. I learned something slightly different than what you are teaching and that is I am willing to pay people like you to do this kind of stuff for me. Try it on some unimportant pieces first. For modern uses of black oxide, see, Learn how and when to remove these template messages, Learn how and when to remove this template message, "How To Remove Rust From A Gun Without Damaging Bluing? To temper the steel so it isn't brittle, place it in an oven heated to 375 F for 3 hours, and then it let it cool overnight. Please be careful with the cold bluing solutions. Thanks for always being so willing to share, Sir. Once you see it turn golden, the process has started and colours will change fairly quickly! The name of the process actually comes from the blue-black appearance of the black iron oxide. If cold bluing is the only practical option, the area should be kept oiled to extend the life of the coating as much as possible. Its durable and wears well. Thats one way to get dyspeptic to write articles! Safety notes: Dont use an aluminum pan. Be patient in the first few minutes as the metal needs to reach the temperatures where it changes colour! "publisher": { When you buy through links on our site, we may earn an affiliate commission. *Potassium Nitrate is an oxidizer. In literally 10 seconds on a buffing wheel incorrectly applied, I could screw that up to a point where it might take be eight+ hours of hand polishing to recover my prior results. Gun companies dont/wont do it because they want to make quick money, and today its all phosphates and bake-on appliance paint (you didnt think a guy who calls Glocks cheez-whiz was going to sing the praises of Duracote or Cerakote, did you?). Bluing is most commonly used by gun manufacturers, gunsmiths, and gun owners to improve the cosmetic appearance of and provide a measure of corrosion resistance to their firearms. You want 0000 steel wool for carding between coats. The hotter the steel, the further the oxygen can diffuse through the oxide coating, so the coating builds thicker before it protects the steel from further oxidation. The hot washing soda tank typically used in gunsmith shops is caustic washing soda, and if you leave the gun in long enough, youll start to see corrosion on the gun before you get to the blueing step. Then you pull it out and scrape off the oil along the blade edge. List Price: $18.64 $18.64. Dont touch the metal with your bare hands since it could cause severe burns. I used Express Blue #1 on lots of guns, where I want something less labor intensive than slow rust blueing (which I wont describe here): most steel wool isnt oil-free. Its a good process for processing lots of guns, but I simply cannot recommend it for people who just want to do a gun here or a gun there.. FigureLLC. An ideal temperature is 180 degrees Fahrenheit but it also depends on the manual. - Ballachy", "Bluing of Steel by Heat Treatment: Why and How it Happens? A non-linear resistance property of the blued steel of razor blades, foreshadowing the same property later discovered in semiconductor diode junctions, along with the ready availability of blued steel razor blades, led to the use of razor blades as a detector in crystal set AM radios that were built by servicemen (as foxhole radios) or by prisoners of war during World War II.[8]. The steel was mild steel and had very little carbon content. It repeats the process adn by the time the head moves on to the next station all the parts are seated presumably for the life of the head. Your 700F temp is too high, IMO. It will first turn gold, then orange, then red, purple, blue and then dark grey! Excessive buffing on stainless steel could result in a grainy appearance so do it with care. And for the next (after the next) installment, how to do hard case coloring. The part you want to place in the receiving part is cold often just placed in a freezer for a few hours. Could I use stainless steel earrings that I have got? Should something happen, seek medical help right away. Alternatively, You could store them in a hard case (like a pelican with a purge) and throw some desiccant packs in there as well. Then, you can put the components back into the bluing tank and increase the temperature until you see the blued steel. Large scale industrial hot bluing is often performed using a bluing furnace. High temperatures and dangerous chemicals mean that a moment of carelessness can make you pay a heavy price. And then there is the difference between general care and storage vs available daily carried protection pistols living in a some sort of Holster (nylon or leather) , good, bad, take them out or leave them in? Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? When heat treating a forged blade you get the whole knife glowing, then submerge just the blade in the oil for 8 seconds. I just had my first experience rust browning a barrel. "logo": { 3 years ago The reason I ask is that when you heat steel that is in the white to 600F, you get a brilliant blue all on its own. OK, Buffing wheels, which Im making their own break-out response from the blueing salt issue: Buffing wheels are useful things in a gun shop. One can generally use the same solution to brown as to blue. Steps to Hot Blue Steel with a Torch By using our site, you agree to our. Check out the video:https://hackaday.io/project/21947-makers-vise/log/60914-coloring-steel-with-magnetism. The book claims they used wait for it "boiling gasoline" not making this up to clean them. Once the steel is clean, you can begin heating it up. You might need two applications to clean up more deeply rusted spots. I hope to someday have good knowledge to pass on to people, heh. OK, now with the sights out and the trigger group off, you can put on the rust/blue remover on the barrel/action. To remove pitting and keep the barrel profile intact requires skill with a file, and that requires hands-on training. Theres nothing wrong with your method, but is is very hazardous, especially to people who have never done anything like it before. Dont mess with hot salts. In order to confirm the bank transfer, you will need to upload a receipt or take a screenshot of your transfer within 1 day from your payment date. Ive cut and pasted this to my notes on the cloud. Only 3 left in stock - order soon. I have to finish my M76 and Galil first and buy the materials. The rod was heated and the plate 2" square was inserted and the rod shrunk onto it. If the sights need to be stripped & blued, follow the same procedure, but dont polish on them. This is all from memory so I might have left some stuff out. It is one smoooooth profile, from one end to the other. Drill bits and gun barrels are common examples. This heating forms the blue on the plate. . If you want it smoother/shinier, you can polish up to 600 grit, with wet-or-dry paper. pliers, mole grips, -An old metal container (I know, a plastic container is pictured but always use a metal one) filled high enough with oil to completely submerge your steel object would be ideal. It is not nice stuff. 1. Frequent TTAG commenter Dyspeptic Gunsmith saw the gun above in our postA Garden Gun Cultivates a Newfound Fascinationand answered reader questions about blueing/reblueing a gun thusly: If the rust is very fine and there is still substantial blueing left on the gun, you might want to strip the blueing. You MUST plug your barrels, gas cylinders, remove your pistons, etc. 1/16-inch pivot wire has a circumference of ~0.2in. Isn't the point of the acetone to degrease, why would i grease? Cold blues will react with steel at room temperature, but you get more aggressive reactions when you heat the gun to, oh, 150 to 200F. Examples of this finish are common on older pocket watches whose hands exhibit what is called 'peacock blue', a rich iridescent blue. Premium fencing blades are often offered with a blued finish. This article was co-authored by wikiHow staff writer. Ive used this method in a pinch to make a tap from a cheap mild steel bolt to chase out galled female threads. Thanks, 8 years ago $3.59. Heating white, degreased steel to 550 to 600F results in brilliant colors. Accidental exposure to the chemicals could result in serious injuries. However, if the bluing effect isnt satisfactory, then you can try giving the components an acid bath (using Hydrochloric Acid). 1. You will need:-2x containers (one of them preferably being metal for the oil)-oil -unleaded petrol/Acetone/Terpentine/Rubbing alcohol or any goo Degrease and heat the items to be blued in a steel pan to about 700F. You turn up your nose at crap guns? Similarly, stainless steel parts may be immersed in a mixture of nitrates and chromates, similarly heated. This is one of the reasons rust and fume bluing are generally more rust-resistant than other methods. This method must not be used on critically heat-treated parts such as receivers, slides or springs. Youre a gunsmith who has a lot of nice guns! Old school smiths use something called washing soda to strip oil off guns.
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