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Robert Farago is the former publisher of The Truth About Guns (TTAG). I'm trying to be positive and constructive, and think this is: for an amateur to stick a very hot torch-heated metal object into a plastic container filled with oil is simply dumb (ok, more polite: "irresponsible") at best, highly dangerous at worst. 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]. 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. Large scale industrial hot bluing is often performed using a bluing furnace. How to colour steel with heat (hot oil finish) is a simple but effective way of achieving a desired colour of choice.The colours are fantastic and often come out in a beautiful two-tone shine. I found through my bluing adventure that different oils do act slighty different but ultimately everything I've used has done the job. The parts must be observed constantly for colour change. Pour in some acetone, and while wearing rubber gloves (dishwashing gloves are OK), put in a pad of 0000 steel wool, swish it around and pull it out. }. By using this service, some information may be shared with YouTube. Ships from and sold by Direct-Wholesale. Glad that there are folks like you around. You can experiment ultimately what oils to use. When putting water in your boil-out tank, use distilled water if you have water with high mineral content. How to Blue Bluing Steel Using Oven Or Torch and Oil Method. You work on nice guns! Metal parts that look black or blue-black are usually blued (rather than painted). -Something to hold your piece with, make sure it's appropriate to hold it with so it doesn't get too hot in your hands. I can keep a Krylon can always handy for touch-ups. Youre just using stump remover to do it. Oil binds with the metal and prevent it from getting air/chemicals to corrode. The actual temperature of the steel depends on the carbon content inside. With. 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 Friction, as from holster wear, quickly removes cold bluing, and also removes hot bluing, rust, or fume bluing over long periods of use. Thanks for always being so willing to share, Sir. It is usually sold in a 1lb bottle for $3, you'll need 3 or 4 pounds probably. Remove any previous finish. Dont want to get any of the liquid on you its 700F. Reply That seems wasteful. Dont. 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. It greatly helped me to learn how to blue a gun perfectly at home. Posted December 21, 2009. 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. Next you hold it in front of your heat source until a blue oxide layer covers the whole blade edge. I guess Ill have to just be happy drying toilet paper. Battery acid is childs play compared to blueing salts. I use a pickling paste. "https://www.facebook.com/Shooting-Mystery-110244180901951", Youre a gunsmith who has a lot of nice guns! Although the steel parts, such as anOrdains watch hands, are near enough miniscule, each Quenching the steel rapidly cools it so the alloys inside harden together. Thanks for the lesson, DG. In the nitre bluing process, polished and cleaned steel parts are immersed in a bath of molten saltstypically potassium nitrate and sodium nitrate (sometimes with 9.4 grams (0.33oz) of manganese dioxide per pound of total nitrate). Next, suspend the components in a cleaning solution tank to get rid of dirt, oil, grease, and crud. Polish to at least 400 grit. 84 or Du-Lite 3-0. Put 600 grit compound on a wheel, use a little too much pressure and youll be gob-smacked at how fast it can cut material off the gun. of the steel than do not even try this on something that is anything other than artistic in nature! It turns out I have. This is a great source that you can learn lots of information from and I'll advise it to to a handfuls of others. The robot gives the steel valve seat a quick blast with liquid nitrogen and drops the seat right in place. I use kerosene to wet my paper from 500 on up. 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. the cost of all the tanks you need for rinse & boil-out On another thread, we can go into nitre blueing, which is basically heating pins/screws/bits/bobs to 600F in a molten salt bath. 3 years ago. 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. Still, you will find that cold blues dont last. Pour in Hot bluing is the current standard[6] in gun bluing, as both it and rust bluing provide the most permanent degree of rust-resistance and cosmetic protection of exposed gun metal, and hot bluing takes less time than rust bluing. You should note that the blue layer is rather delicate so dont treat it roughly. My apologies for the background noise in the first half of the video We had compressors running where I Spray down the whole barreled action with copious amounts of WD-40, inside and out. The book claims they used wait for it "boiling gasoline" not making this up to clean them. When youre using hot blueing salts, youd better be on top of your game, or you can seriously injure yourself. Heating will make the metal better in absorbing the bluing liquid. JUST DONT. Trust me, I'm speaking from experience :) ). My apologies for the background noise in the first half of the video We had compressors running where I had to shoot this This video shows how to blue steel parts using an oven or torch and quenching in oil This method is not the professional method using bluing salts but can be done in your home with a torch or if you have access to a high temperature oven This method will provide your parts some protection from corrosion and show how to achieve different colors in the steel by varying temperatures I am not a professional so please spare me the that s not hot bluing and other criticisms If you don t like it turn it off Hope this comes in handy for someone, How to take apart disassemble and put together assemble a 1911 pistol 1st method, Stevens 20 Gauge Break Action Shotgun Project - Part 4 Cold Bluing with Brownells Oxpho-Blue Creme, Van's Instant Gun Bluing - Removing Gun Rust, Cold bluing Steel blackening How to use Tifoo Black Devil - burnishing steel, Gun Bluing - Colt Official Police 38 Special, Vintage Screwdriver Cold Bluing Br nierung Restore No 2, Slow rust bluing O1 knife blades part two, Easy and Fast bluing touch up Presto Gun Blue Pen, DuraBlue Spray-on Bluing Aerosol Application Process Polished Version, Axe Restoration Part Two Bluing With Birchwood Casey Superblue, Birchwood Casey Aluminum Black Super Blue and Metal Work on a Tanfoglio TA22S, Gun Bluing using cold blue and heat Weihrauch HW35 E Restoration, Perma Blue Gun Blue Paste Birchwood Casey. What did you use for polishing your pieces and Im guessing you polished then added the chemicals after?Thanks, Joe, Question After three coats, washing and drying, the finish was not too bad, considering I was (and am) a rank amateur. Heating up a tank on the kitchen stove. If you do not get crazy and over heat the steel there is no reason to be fearful of the process. Do all the prep you would for express or rust blueing, especially degreasing. . The parts are then oiled and allowed to stand overnight. With HSS you're looking for 2500-3000rpm, M35 or M42 cobalt bits 3000-3600rpm, and carbide 10k-12krpm. on Introduction. Mark the sharpened edge with a crayon. A few safety items: Besides those, you must also have water displacing oil and cleaning solution (Dicro-Clean 909). Thank you all who had a part in the production of this important information! It will first turn gold, then orange, then red, purple, blue and then dark grey! "https://www.reddit.com/user/theshootingmystery" ", not only fun, but also profitable. Use a backing block of wood or even a Pink Pearl rubber eraser. OK, now with the sights out and the trigger group off, you can put on the rust/blue remover on the barrel/action. 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!). Heat the area you'd like to drill just until it starts to glow red, then allow it to cool slowly. this produces better, less turbulant gas flow, which will reduce heat traces. The melting point for KNO3 is 633F. You wouldnt need salts. Safety is the number one priority so protect your body as much as possible. this article statement Hi SteelJunkee Method is as follows: Fit rod into drill and set at constant speed Clean rods with acetone on clean rag Use butane and propane mix blow torch to achieve colour range Quench in water Dry The weird thing is that they look great for around 4-5 days then deteriorate. 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?). Modern home hobbyist versions of this process typically use a hydrogen peroxide and salt solution, sometimes with vinegar, for the rusting step to avoid the need for more dangerous acids.[7]. Only 3 left in stock - order soon. Shooting Mystery is an independent website that provides content for informational purposes only. Oil-free steel wool is also sold by woodworking shops. Im not responsible for marital discord as a result of gun projects attempted on the kitchen stove. Its a pretty straightforward process. Historically, razor blades were often blued steel. This process was repeated until the desired depth of color was achieved or the metal simply did not color further. Very helpful! Process that partially protects steel against rust, This article is about the historical uses of black oxide. Many older browning and bluing formulas are based on corrosive solutions (necessary to cause metal to rust), and often contain cyanide or mercury salts solutions that are especially toxic to humans. At 700, you start losing your blues and the steel starts becoming a wispy silvery-blue, not a dark brilliant blue. Both refer to the same chemical process for providing true gun bluing.[1]. 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. Cold blues will Repeat 3 times. 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. This will remove all the traces of the bluing solution and other chemicals. THANKS DG. (And taking, out of *your* hide). Here is a simple way to get a blued finish on steel. Do this outside, so you can do this next part: Just whip the steel wool at arms length to extract the excess acetone. I can't stress how important the degreasing step is! 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. The use of stainless steel alloy varies a lot from one manufacturer to the other and thats why the bluing effect wont always be consistent. The cross section and size of parts affect the outcome of the finish and time it takes to achieve. Remove the bolt & trigger group this might require a pin punch on some guns to pull the trigger group.From what little I can see in the picture here . 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. So you said the polishing is key for the coloring process. If you cant, just get them out of the case and allow air to circulate around them. NaOH will quickly and completely dissolve aluminum. Not blessed with a climate controlled safe. 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. 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. } Red rust is Fe2O3, and is incomplete rust it will continue allowing the surface to corrode over time hence the oil or wax. Either that or the steel wool. But the article was very informative. 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). The process isnt intended for bronze. 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. 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. The name of the process actually comes from the blue-black appearance of the black iron oxide. After that, slowly and steadily stir the solution in, Step 2: Process the components of the gun, Wait for 10 15 minutes and then take out the components. Work on a metal or steel surface, such as an anvil, to avoid any fire hazards. Fe3O4 requires chemicals and/or heat to push the iron to full oxidation. WebHeat the blade for 15 to 20 minutes in an oven set on 325 Fahrenheit if the handle is metal. It costs an arm and a leg, and you can buy 0000 so cheaply at Wally World that it makes the acetone method worth your while. I wasnt planning on doing it for a few months. Wear safety glasses and gloves while working with hot metal. I rarely use them. This is all from memory so I might have left some stuff out. I hope to someday have good knowledge to pass on to people, heh. Ill be saving this for the future. Find many great new & used options and get the best deals for 13 in 1 Metal Shell Welding Torch Nozzle Tip Cleaner For Welder Soldering at the best online prices at eBay! 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. For this Instructable I'm using thread cutting oil. Oxides come after its been heated to a red heat and cooled. Stainless steel can only tolerate hot bluing and a limited amount of chemicals. Enjoy! Get it Feb 25 - 27. How do I do this? Notify me of follow-up comments by email. 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. Depending on the manufacturers manual, youll have to prepare roughly 6 to 8 tanks to perform the bluing effectively and efficiently. "https://theshootingmystery.tumblr.com/", Water is great for rapidly quenching the hot metal, but it could cause thin steel to distort or crack. 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 method must not be used on critically heat-treated parts such as receivers, slides or springs. I had to sand and restain the stock, and sanded the barrel from 120 down to 400 grit the pitting was so bad. Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? Life is good. You MUST plug your barrels, gas cylinders, remove your pistons, etc. Heres instructions from Mark Lee Supplies on using their Express Blue #1. it washes off with water. Isn't the point of the acetone to degrease, why would i grease? 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 ? When youre done, attach the thermometer to the tank and fire up the burner. Use hemostats to hold a cleaning patch wetted with the solution and apply in nice, long, even strokes. As mentioned, cold bluing can be done at room temperature with decent results. For this reason, it is considered not to add any appreciable thickness to precisely-machined gun parts. $36.73. Every true outdoorsmans dream! The downsides are: the safety issue, which I laid out above, and which youve made clear. The reason why blued guns rust is that something was allowed to attack the surface blueing and get through it to new steel or the blueing job wasnt deep enough to complete passivate the surface from red rust. By using our site, you agree to our. Use your torch to bring up In place of using a hot bath (although at a lower temperature) chemically induced method, it is possible through controlling the temperature to heat steel precisely such as to cause the formation of black oxide selectively over the red oxide. "@type": "ImageObject", 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. The steel was mild steel and had very little carbon content. Please note: As you are working with heat, please be smart, use your common sense, do the bluing process in a well ventilated area and keep a wet towel to hand. Drill bits and gun barrels are common examples. Spilling salts at this temperature will instantly result in fire, because the KNO3 is a powerful oxidizer all on its own, and the added thermal energy will light anything on fire all alone. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. The loose oxide was then carded (scrubbed) off, using a carding brush - a wire brush with soft, thin (usually about 0.002in (0.051mm) thick) wires - or wheel. There are also methods of cold bluing, which do not require heat. You dont want to affect the hardness of your steel in critical areas like actions, bolts, bolt lugs, barrels, chambers, etc. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. Safety notes: Dont use an aluminum pan. "Bluing" is the process of oxidizing steel to create a durable, corrosion-resistant layer. Then you can express blue it with a propane torch and a tank of boiling water. It is caused by a layer of oxide that forms when the steel is heated. Quenched steel is harder, but it becomes more brittle. 3. Now you can start.Apply heat to your object and heat up gently and equally. As I'm bluing round pieces I slowly and evenly rotate the piece over Wait for 10 15 minutes and then take out the components.

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bluing steel with a torch
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