Here is a simple way to get a blued finish on steel. An iron wire, stainless dipper, and part basket are required to handle the guns components and adjust the bluing solution as well. For more information on using a blowtorch and protecting the steel, scroll down! If you are new to the subject and are in need of detailed instructions, then youve come to the right place. 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. it would appear these sights are drifted into dovetails. Color case hardening is the predecessor of all metal coloring typically employed in the firearms industry. 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. Now, using the information above, you should have little problem bluing your firearms on your own. Life is good. 2 years ago, For the record The gentleman said multiple times that the plastic container shown in the pictures was just for the instructional photos and to be sure that the container is made of metal for this process, (Homer Simpson smacking his forehead: "DOH! 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. Ventilation is important. You can experiment ultimately what oils to use. [ Are you sure you want to heat the steel to 700F in that early step? 4 years ago Any gun. Usually, you can find the manufacturers recommended ratio in the product manual. It was left in a flannel gun case in the back of a moist closet for 25+ years. Just remove the blue/rust, degrease, dry, then blue/card/boil-out/oil/drain. How to Blue (Bluing) Steel Using Oven Or Torch and Oil Method OOMAN 2.28K subscribers Subscribe 872 112K views 4 years ago My apologies for the background "logo": { Free shipping. Further, I probably would have used a coarser wet-dry to prep the raw steel (this was a kit Kentucky long rifle) rather than the 1500 grit I used. "publisher": { The difference is immersion in boiling water for bluing. Oil binds with the metal and prevent it from getting air/chemicals to corrode. This method must not be used on critically heat-treated parts such as receivers, slides or springs. Either that or the steel wool. Wait for 10 15 minutes and then take out the components. Hang the trigger group again, re-stock and you should be done. There are many simple ways to achieve good bluing. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. Blacksmith products to this day may occasionally be found made from blued steel by traditional craftsmen in cultures and segments of society who use that technology either by necessity or choice.[5]. To remove them, you put the action/barrel into a sturdy vise (padded with soft jaws) and you use a piece of brass rod to drift the sights out. Historically, razor blades were often blued steel. NaOH will quickly and completely dissolve aluminum. 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!). 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 Hes claiming that method is more durable than Blue alone. When you buy through links on our site, we may earn an affiliate commission. So you will get a shinier finish. Theyll usually go in from the right, and be drifted out from the left (ie, drifting them from left to the right as the muzzle is pointed away from you). Make sure to check every nook and cranny of the components so that you can find any discoloration or blemishes. The name of the process actually comes from the blue-black appearance of the black iron oxide. gas coverage is another big one. Ive dealt with strong acids and strong bases in lab work, and I fear the strong bases more. This will remove all the traces of the bluing solution and other chemicals. Also buffing wheels pre blue. Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? Wear thick gloves and a face mask before you quench your steel so the water or oil doesnt splash onto your hands. After spending most of his career as a firearms expert and enthusiast, he retreated to the great outdoors to raise his family in peace and quiet. You can then u. se a soft brush to gently remove all the residue of the cleaning solution on the components. To obtain oil-free steel wool, get some acetone in a container (say, an old, clean yogurt container you were going to throw away anyway). After that, slowly and steadily stir the solution in the tank to dissolve the salt. I had to sand and restain the stock, and sanded the barrel from 120 down to 400 grit the pitting was so bad. But since this was my first project, with an inexpensive kit as a learning tool, and as I intend to do this again with a much more expensive kit, my trials and errors and your voice of experience will be very useful the next time around. you may benefit from the use of a gas lense as well. Reply These processes were later abandoned by major firearm manufacturers as it often took parts days to finish completely, and was very labor-intensive. In colloquial use, thin coatings of black oxide are often termed 'gun bluing', while heavier coatings are termed 'black oxide'. My current rifle builds are going to be parkerzied. Fill the tank with a suitable amount of water then add in the bluing salt using the correct ratio. I don't understand why you are submerging it in oil? The actual temperature of the steel depends on the carbon content inside. Blue or Black rust is complete passivation of the steel surface Fe3O4. 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. Mea maxima culpa - and I left my comment up rather than delete the thread (for now) just so I could reply and admit the My Dumb, rather than skulk away cleanly >;-), Question I have also had good results with 5w/30 motor oil, I've also used two-stroke oil with good results. On this Wikipedia the language links are at the top of the page across from the article title. Repeat 3 times. Mess. "datePublished": "2022-03-27", 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?). - Ballachy", "Bluing of Steel by Heat Treatment: Why and How it Happens? "https://twitter.com/Shoot1ngMystery", Still, you will find that cold blues dont last. You then oil or wax over the finish when youre done. The differential cooling causes patterns of colors to appear as well as hardening the part. Also thanks DG! If you dont drain the barrel or action recesses properly before putting a barrel or action into a hot salt tank, then you will find out in a hell of a hurry as the water flashes to steam under the surface and again, splatters hot, highly caustic lye/nitrite salts all over you and your shop. You might be able to start at 320 grit. Its oiled in production to keep it from rusting on store shelves. Black iron wire You will need black iron wire to tie around any object you As I'm bluing round pieces I slowly and evenly rotate the piece over the flame to equally disburse the heat. The rod was heated and the plate 2" square was inserted and the rod shrunk onto it. That said, heres the truth: The best blueing you can have on a gun is simple, safe to do, but takes a long time. It is one smoooooth profile, from one end to the other. The steel was mild steel and had very little carbon content. This is as deadly as the lye-based hot salts, but more for the temperature of a large batch of salts. The steel will pull some of the carbon out of the oil while quenching and harden the outer portion of the metal. Its for mild steel, which must be greased, oiled or otherwise coated with something to stop it from rusting almost immediately. NaOH is nasty stuff. It is hazardous. 1. polish it very well 2. clean very well 3. quick dip in dilute FeCl (4:1) is what I use 4. rinse in cold running water and pat Usually they would pack the parts in crucibles and surround them with leather, wood, coal,bone etcThey would heat them up to 1200F to 1500F and hold them at this temp. Various processes are used for the oxidizing process. Use a coffee can or similarly shaped container as your quenching chamber. The cotton gloves insulate your fingers from the heated barrel, and they prevent oils from your skin from getting on the raw steel. You are a fantastic resource for all of us here. Its a pretty straightforward process. $3.59. "url": "https://shootingmystery.com/wp-content/uploads/2021/01/How-to-Blue-Stainless-Steel-in-5-Easy-Steps.jpg" I have in the past few years became more and more. Dont touch the metal with your bare hands since it could cause severe burns. For the process your metal should be nicely polished for the best results.The more shinier the polish the more your end result will glow. Submerge in water and scrape edge. When youre done, attach the thermometer to the tank and fire up the burner. Youll need some shop rolls, ranging from 180 to 400 grit (typical 4-packs are 180, 240, 320 and 400 grit, in 1, 1.5 or 2. To shrink, I assumed you heated the steel plate only, to expand the hole in it. Alternitavely you can leave it in the oil bath to stabilize. Blue Metal Shell 13 in 1 Welding Torch Nozzle Tip Cleaner For Welder Soldering. They melt at, oh, somewhere about 280F. 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. WebBluing is a passivation process in which steel is partially protected against rust using a black oxide coating. Many double-barreled shotguns are soft soldered (lead) or silver brazed together and many of the parts are attached by that method also. I saw you reference a coleman stove and propane tank for heating solution. In the automotive world this is a common practice. 5. Above you can see some example pictures of the colour shades that can be achieved with this techniques.Have fun doing it! That can be a pen torch (pictured), a blow torch, a heat gun, a gas hob (which I am going use) or anything that will provide you with enough heat. Think big scars. For most of the time, guns that utilize carbon steel components are the prime candidates for bluing but its totally possible to color stainless steel blue as well. Just dont do it. 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. 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. This article has been viewed 914,567 times. You can get a IR non-contact thermometer for less than $20 at Harbor Freight. Commercial products are widely sold in small bottles for cold bluing firearms, and these products are primarily used by individual gun owners for implementing small touch-ups to a gun's finish, to prevent a small scratch from becoming a major source of rust on a gun over time. At the end of this heating process the crucible is removed from the oven and positioned over a bath of water with air forced through a perforated coil in the bottom of the bath. Premium fencing blades are often offered with a blued finish. By using this service, some information may be shared with YouTube. You risk a big fire that is self sustaining by the reaction itself. Always back your paper when youre polishing over edges and up against features. Mark the sharpened edge with a crayon. YouTube - Nitre bluing a few gun parts. I have done a cold blue on a very rusted .22 for a friend. "@type": "Organization", A Pocket Sundial From a Broken Pocket Watch! Just let any residual matter evaporate/dry. Stand on end over some paper towels to drain. 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. Often it does provide an adequate cosmetic touch-up of a gun's finish when applied and additionally oiled on a regular basis. Safety notes: Dont use an aluminum pan. Heating will make the metal better in absorbing the bluing liquid. Once you strip the blue & rust, then you can see what youre dealing with. I use it, oh so cautiously in making my biodiesel. "author": "Christopher Graham", I use a pickling paste. Heating white, degreased steel to 550 to 600F results in brilliant colors. What is your opinion of the 2 to 1 lye and potassium nitrate bluing solution? Bluing is a process usually used by gun owners and firearms manufacturers to improve the aesthetic value of their weapons. Rust bluing is also used on shotgun barrels that are soldered to the rib between the barrels, as hot bluing solutions melt the solder during the bluing process. So I buffed down the barrel with steel wool and started over heating the barrel in the oven before taking it outside to add the solution (which is nitric acid). And I work alone in my shop, and lack the required (IMO) safety facilities that are needed. This method was adopted by larger firearm companies for large scale, more economical bluing. 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. If everything appears good, then you can transfer the components into a hot water tank. Examples of this finish are common on older pocket watches whose hands exhibit what is called 'peacock blue', a rich iridescent blue. Its a good process, but it isnt a 1:1 replacement for blueing. 35% Potassium nitrate (aka saltpeter), http://castboolits.gunloads.com/archive/index.php/t-36054.html.
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