I rarely use them. I don't understand why you are submerging it in oil? Christopher Graham writes all the content and reviews on this site with the help of his team of hunters and shooters. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. The blueing salt bath will be at about 286 to 292F, and as it is bubbling away, it is losing water, and the boiling point of the solution keeps climbing. Cold bluing is not particularly resistant to holster wear, nor does it provide a large degree of rust resistance. "width": "1500", Add the two together and you have what is akin to rocket fuel in your face a way of oxidizing almost any organic material with insufficient water for cooling into a furious flame. Do all the prep you would for express or rust blueing, especially degreasing. 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. This will remove all the traces of the bluing solution and other chemicals. SO, DG; unless I missed it, I am assuming the torch is used separate from heating the tank/ container with the boiling solution. Oil and grease really are the enemy because youre trying to (literally) corrode the metal. "https://theshootingmystery.tumblr.com/", You can then use a soft brush to gently remove all the residue of the cleaning solution on the components. It is one smoooooth profile, from one end to the other. By using our site, you agree to our. Hunter Rising is a wikiHow Staff Writer based in Los Angeles. Keep heating the steel until you notice a blue color form on the metal. Is the torch used to heat metal ..ONLY.with Cold bluing? I can't stress how important the degreasing step is! For this reason, it is considered not to add any appreciable thickness to precisely-machined gun parts. Put all the components into the tank and wait for 5 15 minutes. Woodworkers doing furniture finishing will use 000 and 0000 wool, and they hate oil on their wool for rubbing down oil finishes. Many double-barreled shotguns are soft soldered (lead) or silver brazed together and many of the parts are attached by that method also. The difference is immersion in boiling water for bluing. [ I wore latex gloves, as Brownells recommended, but used a pot holder to handle the hot barrel, and that may have been the source. -2x containers (one of them preferably being metal for the oil), -unleaded petrol/Acetone/Terpentine/Rubbing alcohol or any good degreaser, -metal object/s (I used mild steel, Please note this method should NOT be used on tempered/hardened steel as you will effect the properties of the metal). Do NOT wipe/touch your metal with anything after degreasing as the whole purpose of cleaning was then for nothing. It greatly helped me to learn how to blue a gun perfectly at home. My apologies for the background noise in the first half of the video We had compressors running where I Bluing, being a chemical conversion coating, is not as robust against wear and corrosion resistance as plated coatings, and is typically no thicker than 2.5 micrometres (0.0001 inches). The cabinet is then sealed. 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. Its for mild steel, which must be greased, oiled or otherwise coated with something to stop it from rusting almost immediately. The thickness of the oxide is a function of how hot you heat the steel (The color is due to interference of light reflecting from the surface of the oxide coating, and light reflecting from the oxide-steel interface). This article was co-authored by wikiHow staff writer. List Price: $18.64 $18.64. Cold blueing solutions usually just dont wear well. Cold blues will Soft, low-carbon steel was used, but strong materials were needed for the receivers of firearms. The tank of distilled water you heat with a camp stove, the kitchen stove (Im not responsible for marital discord and disruptions of conjugal relations) or some other much larger heat source to a boil. Cooking off the more volatile hydrocarbons leaving the heavier ones produces a different effect yet again. Buffing wheels have their purpose, but they take real skill to use without making a mess of guns, starting with the selection of the wheel (theres, oh, at least six types of buffing wheel), choice of type of compound, choice of grit of compound, choice of wheel speed (many buffers have only one speed, and there are some jobs where you really want a 3-phase motor on your buffer with a VFD to adjust the speed down from 1800 or 3600 RPM) and so on. Learn more Steel is a common durable alloy, and while most steel used in tools is already tough, you can harden it even more to prevent wear and tear. Take them out after a couple of minutes and then wipe them clean to remove excess oil. "name": "Shooting Mystery", Besides those, you must also have water displacing oil and cleaning solution (Dicro-Clean 909). You have a degreased gun, and now you need to get the metal hot enough that the reaction will oxidize the steel as much as possible. That way, you can still use your oven for the rest of the evening. Salts. Degrease a pad of 0000 steel wool with acetone. I have also had good results with 5w/30 motor oil, I've also used two-stroke oil with good results. If you are referring to torch bluing, the Instead of applying the acid solution directly to the metal parts, the parts are placed in a sealed cabinet with a moisture source, a container of nitric acid and a container of hydrochloric acid. For the chemical, the bluing solution should be either Oxynate No. }, Mix equal parts of cream and liquid Brownells Oxpho Blue. All About Bluing Steel Stainless Steel Necessary Gears and Tools Procedure Step 1: Ready the bluing tank Step 2: Process the components of the gun Step 3: Suspend I really appreciate you taking the time to share it DG. Reply "dateModified": "2022-03-27", This is one of the reasons rust and fume bluing are generally more rust-resistant than other methods. Then the crucibles would be removed from the furnace and placed over boiling hot water and air would be bubbled through the water and the parts would be dropped into the water. If a bank transfer is made but no receipt is uploaded within this period, your order will be cancelled. the cost of the burners or heaters to heat up all these tanks really only practical if you have natural gas available Then, use a pair of tongs to carry the steel to a container filled with water or vegetable, and submerge the hot metal in the liquid. Shooting Mystery is reader-supported. Hot. "keywords": ["how to blue stainless steel"], 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. You have entered an incorrect email address! You will get it. There are 10 references cited in this article, which can be found at the bottom of the page. If everything appears good, then you can transfer the components into a hot water tank. This process was repeated until the desired depth of color was achieved or the metal simply did not color further. kitty litter (I would recommend the unused variety). "url": "https://shootingmystery.com/wp-content/uploads/2021/01/How-to-Blue-Stainless-Steel-in-5-Easy-Steps.jpg" If you drop a piece of paper in there, or hydrocarbon compounds (like oil or grease on your part). *Potassium Nitrate is an oxidizer. Its the corrosive gift that just keeps on giving. Wear safety glasses and gloves while working with hot metal. Notify me of follow-up comments by email. The process isnt intended for bronze. Trust me, I'm speaking from experience :) ). WHERE or when would the torch get used? Brownells has a product that will strip blueing and rust (Fe3O4 and Fe3O2, respectively) and not corrode the underlying steel.Remove the barrel & action from the stock. Bluing may be applied by immersing steel parts in a solution of potassium nitrate, sodium hydroxide, and water heated to the boiling point, 275310F (135154C) depending on the recipe. It is also used by machinists, to protect and beautify tools made for their own use. *700F is very close to the heat treatment temperature of some steels. Initially case hardening was used but did not offer any aesthetics. Bluing is also used for providing coloring for steel parts of fine clocks and other fine metalwork. this produces better, less turbulant gas flow, which will reduce heat traces. You want 0000 steel wool for carding between coats. wikiHow marks an article as reader-approved once it receives enough positive feedback. Youll have a hot caustic degreaser tank (about 10 minutes), then a cold rinse tank, then into the hot salts for, oh, 15 to 20 minutes, then out into the hot rinse, then into a cold running rinse tank, then into a water displacing oil tank for 20 minutes or so. The "hot" process is an alkali salt solution using potassium nitrite or sodium nitrate and sodium hydroxide, referred to as "traditional caustic black", that is typically done at an elevated temperature, 135 to 155C (275 to 311F). YouTube - Nitre bluing a few gun parts. Drill bits and gun barrels are common examples. 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. Either that or the steel wool. "logo": { Metal Finishing Guru. After three coats, washing and drying, the finish was not too bad, considering I was (and am) a rank amateur. Todos los derechos reservados. Its a pretty straightforward process. This article has been viewed 914,567 times. I can keep a Krylon can always handy for touch-ups. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. Ill detail why. It takes practice. That would be a hot salt blueing mix. Also thanks DG! Try it on some unimportant pieces first. "sameAs": An ideal temperature is 180 degrees Fahrenheit but it also depends on the manual. You work on nice guns! I used Brownells Plum Brown, a product that requires that the barrel be heated to 275 degrees to activate the reaction. Next you hold it in front of your heat source until a blue oxide layer covers the whole blade edge. Note: I know a plastic container is pictured but always use a metal one! Hopefully these concepts suggest caution and diligence for what you are doing. My first time wasnt a stunning success. Keep them in that state while you heat them but be sure to not boil up the tank. Youre a gunsmith who has a lot of nice guns! If you cant, just get them out of the case and allow air to circulate around them. Acetone is also useful for de-greasing the barreled action. This method was adopted by larger firearm companies for large scale, more economical bluing. On this Wikipedia the language links are at the top of the page across from the article title. Dont want to get any of the liquid on you its 700F. A Pocket Sundial From a Broken Pocket Watch! WebHeat the blade for 15 to 20 minutes in an oven set on 325 Fahrenheit if the handle is metal. Just take them from the comments he posts. A few safety items: There can be different layers you have to apply. 4.3 out of 5 stars 242 ratings-30% $12.99 $ 12. -something to hold your object with i.e. 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.. Excellent info. 500F-600F is often all that is needed and the parts can be done over and over again you just have to clean between each attempt. 2mm wire has a circumference of ~0.25in. I have cut and polished 4 pieces of mild steel to demonstrate different colour stages. 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. Could I use stainless steel earrings that I have got? That said, heres the truth: The best blueing you can have on a gun is simple, safe to do, but takes a long time. The higher temperatures of the other processes as well as their caustic nature could weaken the soldered joints and make the gun hazardous to use. Heating white, degreased steel to 550 to 600F results in brilliant colors. 3 years ago I like parkerization on some of my milsurps. Safety is the number one priority so protect your body as much as possible. Red rust is Fe2O3, and is incomplete rust it will continue allowing the surface to corrode over time hence the oil or wax. It will first turn gold, then orange, then red, purple, blue and then dark grey! It is always essential to remove all oils from metals you want to blue, even if the cold blueing solution claims you dont need to do so. }. Submerge in water and scrape edge. Drop a piece of hot charcoal in it and it will burn in the absence of any atmosphere as the nitrate provides the oxygen for the reaction. Hang the trigger group again, re-stock and you should be done. Higher carbon contents will take longer to heat. Referring to the post that started all of this; Dyspeptic Gunsmith says: When you buy through links on our site, we may earn an affiliate commission. I ended up with some spots where the browning did not take, and a few dull spots, most of which I was able to buff out with steel wool soaked with gun oil. As mentioned, cold bluing can be done at room temperature with decent results. I have done a cold blue on a very rusted .22 for a friend. 84 or Du-Lite 3-0. Mea culpa. However, the chemicals from the bluing process can accomplish uneven staining on aluminium and polymer parts. } WD-40, as mentioned earlier, is a water-displacing oil compound not a penetrating lube, and for preventing rust, WD-40 actually works pretty well, but it doesnt last like cosmoline or waxy oils used for long-term rust prevention. Quenched steel is harder, but it becomes more brittle. It's worth noting that there can be some additives in motor oil that release hydrocarbons when burnt which is a known carcinogens to the body (in other words: Bad Stuff!). Shooting Mystery is an independent website that provides content for informational purposes only. Include your email address to get a message when this question is answered. The List Price is the suggested retail price of a new product as provided by a manufacturer, supplier, or seller. Next comes the main part. Black iron wire You will need black iron wire to tie around any object you You should put the brass drift (which you can make out of a piece of brass rod about 1/4 in diameter) on the sight base, and then start tapping the end of the drift with a small hammer. Rust bluing was developed between hot and cold bluing processes, and was originally used by gunsmiths in the 19th century to blue firearms prior to the development of hot bluing processes. As I'm bluing round pieces I slowly and evenly rotate the piece over the flame to equally disburse the heat. If you have a wood or phenolic handle, use a propane torch to heat the blade only for about two minutes. Your container should be relatively larger than your object. 4 years ago This finish allows them to be stored in high-moisture conditions, like sports bags, without rusting. Bluing is also used in seasoning cast-iron cookware, to render it relatively rust-proof and non-stick. But the article was very informative. You can not do this method with Aluminium because it won't reach the temperatures required for bluing, it will just melt. Do this outside, so you can do this next part: Just whip the steel wool at arms length to extract the excess acetone. This article received 28 testimonials and 92% of readers who voted found it helpful, earning it our reader-approved status. When you add water to a hot salt tank, you get an explosion of steam, and you need to develop some skill in adding the water with a very fine copper pipe on your water hose to prevent steam blow-outs spattering salts all over you. } I wish this article had come out sooner, since I did not know that 0000 steel wool may have oil in it. the cost of all the tanks you need for rinse & boil-out Sign up for wikiHow's weekly email newsletter. Historically, razor blades were often blued steel. I use kerosene to wet my paper from 500 on up. Thats one way to get dyspeptic to write articles! The color is oxide, but I believe you can scrape it off. Only 3 left in stock - order soon. I have in the past few years became more and more. Ive hot salt blued guns in a shop with the proper equipment and you can shove a river of iron through a single hot salt tank in an afternoon. When polishing something like the above rifle/shotgun, youve got a pretty light coat of rust, without severe pitting. If you havent done it before, wait until I mention some items about it. Vegetable oil has a higher boiling point, so the hot steel will take longer to cool and reduce the chance of it cracking. Mark the sharpened edge with a crayon. In the automotive world this is a common practice. You might be able to start at 320 grit. This item: Special Blue Full Metal Butane Torch (Gold) - Refillable Flame Lighter- Culinary Torch - Welding Torch - Adjustable Dual Flame for Desserts, Creme Brulee, BBQ and Baking.
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