4. Once you get the colour you want, go outside to your oil container and fully quench your object into the oil!Note: I know a plastic container is This is a great source that you can learn lots of information from and I'll advise it to to a handfuls of others. If the sights need to be stripped & blued, follow the same procedure, but dont polish on them. Again, dont mess around with these chemicals and only handle them with extreme attention. Oh mas oui.Express blueing, slow rust blueing, hot salt blueing, nitre blueing, carbona blueing all are better than cold blueing. Make sure to check every nook and cranny of the components so that you can find any discoloration or blemishes. Fume bluing is another process similar to rust bluing. Salts. Its oiled in production to keep it from rusting on store shelves. Similarly, stainless steel parts may be immersed in a mixture of nitrates and chromates, similarly heated. THANKS DG. I have at least three cold blue solutions in my shop including Oxpho-blue, 44-40 and others. Submerge in water and scrape edge. You want 0000 steel wool for carding between coats. The plate turned blue just like you ible and I was told this was an effect of compression fitting.the rod didn't change colour even though it had the heat applied to it so was it actually the compression fit that changed the plates colour. Then remove it from the degreaser, don't be tempted to wipe it off with anything. Its for mild steel, which must be greased, oiled or otherwise coated with something to stop it from rusting almost immediately. Use a coffee can or similarly shaped container as your quenching chamber. Ive gotten hot blue salts on me splashed into my hair. Acetone is also useful for de-greasing the barreled action. This article received 28 testimonials and 92% of readers who voted found it helpful, earning it our reader-approved status. Though it may seem tricky at first, youll be glad to have figured it out because knowing how to blue stainless steel will come in handy from time to time. gas coverage is another big one. 8 years ago 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. How do I do this? The torch comes in when you first apply the Express Blue. the cost of all the tanks you need for rinse & boil-out 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. Another good test for determining when the steel is ready is seeing if a magnet sticks to its surface. How do I harden a steel hammer so that is lasts longer and is more durable? Before operating your torch, read all instructions so you know how to handle it safely. Its a good process, but it isnt a 1:1 replacement for blueing. The mixed fumes of the acids produce a uniform rust on the surface of the parts (inside and out) in about 12 hours. Fe3O4 requires chemicals and/or heat to push the iron to full oxidation. 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. Contemporary heat-treatable steels did not exist or were in their infancy. ")You're ABSOLUTELY right. This step should be done before heating the steel, as the steel should be quenched immediately after removing from heat. If you havent done it before, wait until I mention some items about it. It, too, must be oiled to provide any significant rust resistance. Im asking because theres a guy on YouTube recommending Brown Express first, then several layers of Blue over that. Ive dealt with strong acids and strong bases in lab work, and I fear the strong bases more. This article was co-authored by wikiHow staff writer. 2. Think big scars. Use hemostats to hold a cleaning patch wetted with the solution and apply in nice, long, even strokes. Next, suspend the components in a cleaning solution tank to get rid of dirt, oil, grease, and crud. When polishing something like the above rifle/shotgun, youve got a pretty light coat of rust, without severe pitting. 5 years ago, I found that heating will turn steel silver ~> gold ~> violet ~> blue. Heat source You will require at least one burner for bluing salts and two hot water burners. Craig, torch bluing is a real thing that has been use a lot in the custom gun world, mostly for screw heads but even for complete muzzle loader creations ( the vendor will be quite proud of his work it seems as cost increases considerably to a finished item). OK, now with the sights out and the trigger group off, you can put on the rust/blue remover on the barrel/action. The name of the process actually comes from the blue-black appearance of the black iron oxide. Your 700F temp is too high, IMO. http://www.lowes.com/pd_188198-316-HG-66420_0__?productId=4764059 At 700, you start losing your blues and the steel starts becoming a wispy silvery-blue, not a dark brilliant blue. Save my name, email, and website in this browser for the next time I comment. "https://www.youtube.com/channel/UC6dwEQfHK1tk_ZeaA4PniOA/", wikiHow marks an article as reader-approved once it receives enough positive feedback. Answer "mainEntityOfPage": "https://shootingmystery.com/blue-stainless-steel-beginners/", I found through my bluing adventure that different oils do act slighty different but ultimately everything I've used has done the job. Fill the tank with a suitable amount of water then add in the bluing salt using the correct ratio. The parts must be observed constantly for colour change. Ill be saving this for the future. Many double-barreled shotguns are soft soldered (lead) or silver brazed together and many of the parts are attached by that method also. 4.3 out of 5 stars 242 ratings-30% $12.99 $ 12. Wear thick gloves so you dont burn yourself. Oil and grease really are the enemy because youre trying to (literally) corrode the metal. Your tanks better be tight, your stands for the tanks better be rigid, youd better have top-of-the-line fire extinguishers (NB the plural) available to you. By the time I was done it looked like it was a beat up 5 year old gun rather than a 1930s bolt .22 that came from a scrap yard. Alternatively, you can press the pad of steel wool between your hands over the container of acetone, and then put it on some paper towels to dry. First, let us go through a couple of bluing concepts that you have to know in order to achieve the desired result. If you want it smoother/shinier, you can polish up to 600 grit, with wet-or-dry paper. It turns out I have. on Introduction, looks nice but you are using what is known as heat treatment which will darken steel, not using bluing salts as in gun bluing of rifle barrels all in all very nice instructable, Reply There is something really rewarding about this technique. Remove any previous finish. Get it Feb 25 - 27. No one can even tell you what the heat treat is on a 1895 Mauser for instance yet we do not wet ourselves before we shoot one! Now you slide the cold rod in, and the plate cools, gripping the rod. Its the corrosive gift that just keeps on giving. That way, you can still use your oven for the rest of the evening. -An old container filled with your chosen degreaser (unleaded petrol), -Your desired polished metal object/s (very important! That seems wasteful. "https://theshootingmystery.tumblr.com/", If you cant, just get them out of the case and allow air to circulate around them. An iron wire, stainless dipper, and part basket are required to handle the guns components and adjust the bluing solution as well. Even a fingerprint will affect the consistency of the colour. It is usually sold in a 1lb bottle for $3, you'll need 3 or 4 pounds probably. 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. The content is not meant to be a replacement for professional service advice. I hope to someday have good knowledge to pass on to people, heh. You need to adjust the boiling point of the salts for your altitude. Rinse them in a cold water tank after. Even with safety glasses and a full-face shield, a rubber apron, rubber boots, etc it is possible to get salts into your eyes and all over the rest of you. Always wear goggles and gloves when operating a propane blow torch. The steel is also used for producing great police flashlights with awesome durability. If everything appears good, then you can transfer the components into a hot water tank. The difference is immersion in boiling water for bluing. I heat treated a piece of carbon steel to make it less likely to wear (using its edge as a cutting surface in a wood turning application). It is a difficult product to apply evenly, offers minimal protection and is generally best used for small fast repair jobs and touch-ups.[2][3]. The differing rate of cooling for each area produced a different color creating that rainbow effect. 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. Oil-free steel wool is also sold by woodworking shops. 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! You might need two applications to clean up more deeply rusted spots. There are many simple ways to achieve good bluing. 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. "https://www.pinterest.com/theshootingmystery/", The practice of bluing steel takes time and an exquisite eye for detail. Most knives, rifle receivers and barrels are heated to at least 1200F and cooled and drawn at 490F-700F. The part you want to place in the receiving part is cold often just placed in a freezer for a few hours. Cold blues will When you buy through links on our site, we may earn an affiliate commission. Ive used this method in a pinch to make a tap from a cheap mild steel bolt to chase out galled female threads. I like using acetone to strip the heavy oil on guns, because it lightens up the oils and makes them easier to strip with a water-based cleaner. on Introduction. 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. I have also had good results with 5w/30 motor oil, I've also used two-stroke oil with good results. 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. $3.59. Thanks, 8 years ago Not only does it give you an alchemical feeling of satisfactionbut it also gives the metal a finish to stop corrosion. 4 years ago You turn up your nose at crap guns? You can then use a soft brush to gently remove all the residue of the cleaning solution on the components. And for the next (after the next) installment, how to do hard case coloring. It had been thoroughly degreased before my first attempt, but in trying to repair a poor result, I apparently contaminated it a bit. Ill detail why. They should send you a stipend for your time. Dont scrub the solution onto the gun, just run a patch that is not dripping wet down one complete run on the barrel/action in one smooth stroke. 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. Fill a heat-safe container with water or oil deep enough to submerge your steel. There are 10 references cited in this article, which can be found at the bottom of the page. I didnt drop outta my mommas womb being able to do this stuff. Thanks for the lesson, DG. 1. 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. http://cdn.spectrumbrands.com/~/media/Spectracide/Files/MSDS/SpectracideStumpRemoverGranulesSDSApr15.ashx. I wouldnt use this bluing method for these items. Now securely hold your piece with whatever you have chosen. Heating white, degreased steel to 550 to 600F results in brilliant colors. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. I handed a buddy my wallet and cell phone, and stepped under the safety shower and got wet. Its easy enough to color metal with a torch, but it has always been a hit-or-miss process for me, and when it was a big hit, I was rarely able to re-create how it got that way. Premium fencing blades are often offered with a blued finish. 6 years ago. Color case hardening is the predecessor of all metal coloring typically employed in the firearms industry. If you look at the temps that Tenifur(SP) and Melonite(sp) and early Pakerizing processes used this is nothing. That means 50-60 revolutions to make a foot. Participated in the Explore Science Contest. 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. 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. This is all from memory so I might have left some stuff out. Safety notes: Dont use an aluminum pan. We strongly advise that you only push through with this process if you are absolutely confident that you are able to perform the necessary precautions. Whats the difference between Brown Express and Blue Express? Drill bits and gun barrels are common examples. However, rust bluing small areas often match, blend, and wear better than any cold bluing process. "I am nearly 16 and can not wait until I have my drivers license. Hot bluing should never be attempted on aluminium, as it reacts it usually dissolves in the caustic salt bath. Gee, Im thinkin Duro or cero coat maybe even Krylon might be a good enough.. Shooting Mystery is reader-supported. Theres nothing I see as super-dangerous about blueing other than trying to do hot salt blueing without all the correct safety equipment and precautions. That would be a hot salt blueing mix. Notify me of follow-up comments by email. Put all the components into the tank and wait for 5 15 minutes. *Potassium Nitrate is an oxidizer. } I think I was drinking heavily (and likely doing stupid things in my shop with high heat and flammables at the time, possibly while juggling chainsaws) at the time I made that comment - without reading carefully. Robert Farago is the former publisher of The Truth About Guns (TTAG). Life is good. 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. I wish this article had come out sooner, since I did not know that 0000 steel wool may have oil in it. To remove pitting and keep the barrel profile intact requires skill with a file, and that requires hands-on training. No. Theres a reason why I buy up clapped-out guns and stuff where people look at me with a WTF?! The downsides are: the safety issue, which I laid out above, and which youve made clear. They melt at, oh, somewhere about 280F. The cotton gloves insulate your fingers from the heated barrel, and they prevent oils from your skin from getting on the raw steel. 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. Just use distilled water. 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. This is an alternative method for creating the black oxide coating. 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! However, there are certain characteristics differences between the materials so knowing clearly how to blue stainless steel is really important. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. Then, you can put the components back into the bluing tank and increase the temperature until you see the blued steel. Oil binds with the metal and prevent it from getting air/chemicals to corrode. A few safety items: Just let any residual matter evaporate/dry. You have entered an incorrect email address! Sign up for wikiHow's weekly email newsletter. Referring to the post that started all of this; Dyspeptic Gunsmith says: To harden steel, start by heating the metal directly with a blow torch until it turns a cherry red color. Wipe them down with WD-40 on a regular basis. 2mm wire has a circumference of ~0.25in. This signifies that the steel is tempered. 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 Theres nothing wrong with your method, but is is very hazardous, especially to people who have never done anything like it before. Higher carbon contents will take longer to heat. As mentioned, cold bluing can be done at room temperature with decent results. This is a great time to point out that leaving guns in gun cases, especially the woolen/fleece cases, in the back of a closet, is one of the most sure-fire ways to rust the value completely out of a gun. You MUST plug your barrels, gas cylinders, remove your pistons, etc. Quenched steel is harder, but it becomes more brittle.
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