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My current rifle builds are going to be parkerzied. Colour case hardening occurs when soft steels were packed in a reasonably airtight crucible in a mixture of charred leather, bone charcoal and wood charcoal. 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. Todos los derechos reservados. Most knives, rifle receivers and barrels are heated to at least 1200F and cooled and drawn at 490F-700F. It cannot rust any further. Now securely hold your piece with whatever you have chosen. Heat the gun parts. wikiHow marks an article as reader-approved once it receives enough positive feedback. "Bluing" is the process of oxidizing steel to create a durable, corrosion-resistant layer. 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. Make sure the piece is chemically clean, sandblasting followed by power wire brushing is good then stop heating when you hit purple because the heat will travel. I hope to someday have good knowledge to pass on to people, heh. Hardened steel prevents knife blades from dulling and tools from bending and breaking. For the color change to be uniform you have to remove the grease, oil, paint etc or it looks blotchy. I really appreciate you taking the time to share it DG. The mixed fumes of the acids produce a uniform rust on the surface of the parts (inside and out) in about 12 hours. YouTube - Nitre bluing a few gun parts. So basically, youll want the rifle in the vise with the muzzle pointed to your left. The differing rate of cooling for each area produced a different color creating that rainbow effect. ALL RIGHTS RESERVED. journeyman. Step 3: Suspend the components in the bluing solution tank, However, if the bluing effect isnt satisfactory, then you can try giving the components an acid bath (using, Step 4: Rinse the components in a cold water tank then transfer them to a hot one, Step 5: Submerge the components in a tank filled with water displacing oil, Address: 4455 Camp Bowie Blvd, Ste 114 #852, Fort Worth, TX 76107. In colloquial use, thin coatings of black oxide are often termed 'gun bluing', while heavier coatings are termed 'black oxide'. However, oil may spill and create a fire hazard if the steel is put into the oil too quickly. 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. For larger pieces of steel, you need to use a. 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?). Im not responsible for marital discord as a result of gun projects attempted on the kitchen stove. SO, DG; unless I missed it, I am assuming the torch is used separate from heating the tank/ container with the boiling solution. The process isnt intended for bronze. Theres nothing wrong with your method, but is is very hazardous, especially to people who have never done anything like it before. Quenching the steel rapidly cools it so the alloys inside harden together. 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. However, rust bluing small areas often match, blend, and wear better than any cold bluing process. "width": "1500", Either of these two methods is called 'hot bluing'. And for the next (after the next) installment, how to do hard case coloring. It is hazardous. Above you can see some example pictures of the colour shades that can be achieved with this techniques. http://www.lowes.com/pd_188198-316-HG-66420_0__?productId=4764059 The book claims they used wait for it "boiling gasoline" not making this up to clean them. Wait for a day to let the bluing properly cure before you do anything else to it. You should note that the blue layer is rather delicate so dont treat it roughly. }. At 700, you start losing your blues and the steel starts becoming a wispy silvery-blue, not a dark brilliant blue. Thoroughly degrease the area to be reblued with acetone. When heat treating a forged blade you get the whole knife glowing, then submerge just the blade in the oil for 8 seconds. Heat the gun parts. "@type": "ImageObject", Notify me of follow-up comments by email. Hopefully these concepts suggest caution and diligence for what you are doing. JUST DONT. At least one of the cold bluing solutions contains selenium dioxide. I had to sand and restain the stock, and sanded the barrel from 120 down to 400 grit the pitting was so bad. Then you can express blue it with a propane torch and a tank of boiling water. "image": { For this Instructable I'm using thread cutting oil. Different colors can be achieved through variations of this method including quenching in oil instead of water. Once you get the colour you want, go outside to your oil container and fully quench your object into the oil! It can soften up some paints and plastics. } "https://www.facebook.com/Shooting-Mystery-110244180901951", What is your opinion of the 2 to 1 lye and potassium nitrate bluing solution? With HSS you're looking for 2500-3000rpm, M35 or M42 cobalt bits 3000-3600rpm, and carbide 10k-12krpm. Ventilation is important. Red rust is Fe2O3, and is incomplete rust it will continue allowing the surface to corrode over time hence the oil or wax. Depending on the manufacturers manual, youll have to prepare roughly 6 to 8 tanks to perform the bluing effectively and efficiently. The salts will be a gooey caustic mess while theyre cold, and you MUST have covers on the tank when youre not using them, or the salts will climb over the edges of the tank and make a mess on the floor. Its much cheaper anyways. }, This article was co-authored by wikiHow staff writer, Hunter Rising. 3.3k. 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 . Knowledge is the power and fear is the opposite of power it cripples the mind and the body and almost always guarantee's a poor decision will be made. 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. Referring to the post that started all of this; Dyspeptic Gunsmith says: If youre using acetone to de-oil, dont be afraid to do it more than once. They have their place, but doing a whole gun with them isnt that place. As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). WebBluing is a passivation process in which steel is partially protected against rust using a black oxide coating. Steps to Hot Blue Steel with a Torch To shrink, I assumed you heated the steel plate only, to expand the hole in it. "@type": "ImageObject", Ill be buying the stainless tubs and chemicals to do it and go for as close to black as I can get. Keep them in that state while you heat them but be sure to not boil up the tank. Ill detail why. This article was very, "I've been working with steel since I was a child, and reviewing these proper methods and skills makes my projects, "It surely educated me on several points. While the rod may heat some by conduction, it wouldn't get hot enough to start the color-forming process. This article was co-authored by wikiHow staff writer. 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. Theres a reason I didnt pursue a career in chemistry. Tenifer get's up to (1077F) last I checked and was the 5th step in Glock heat treating after that they Pakerize it. "name": "Shooting Mystery", Dont touch the metal with your bare hands since it could cause severe burns. That way, you can still use your oven for the rest of the evening. Its nice when something can be re-used a time or two, especially when used in diversified ways. Oil binds with the metal and prevent it from getting air/chemicals to corrode. 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. These processes were later abandoned by major firearm manufacturers as it often took parts days to finish completely, and was very labor-intensive. I rarely use them. How to Blue Bluing Steel Using Oven Or Torch and Oil Method. There is something really rewarding about this technique. Higher carbon contents will take longer to heat. Make sure to check every nook and cranny of the components so that you can find any discoloration or blemishes. WebThe gun bluing process Start with 1 gallon of water and add it to a deep fryer that has been thoroughly cleaned. 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). 2. This article received 28 testimonials and 92% of readers who voted found it helpful, earning it our reader-approved status. Interesting and informative as always. When youre using polishing paper, you think that 600 grit is very fine, and it is taking you hours to polish out something to 600. Woodworkers doing furniture finishing will use 000 and 0000 wool, and they hate oil on their wool for rubbing down oil finishes. This is a great source that you can learn lots of information from and I'll advise it to to a handfuls of others. -An old container filled with your chosen degreaser (unleaded petrol), -Your desired polished metal object/s (very important! Stainless steel can only tolerate hot bluing and a limited amount of chemicals. This will keep the bluing from adhering to the sharpened edge. Use ice cubes. It provides the stainless steel surface with a layer of protection, giving rust and corrosion resistance while reducing potential glare as well. 35% Potassium nitrate (aka saltpeter), http://castboolits.gunloads.com/archive/index.php/t-36054.html. 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). Its the corrosive gift that just keeps on giving. 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. Hunter Rising is a wikiHow Staff Writer based in Los Angeles. Glad that there are folks like you around. Wear disposable nitrile gloves, work in adequate ventilation, bag and dispose of all rags/towels used in the process in their own bags, and quickly. Also, the results you indicate are typical of still having some oil on the gun. Also buffing wheels pre blue. Cold blueing solutions usually just dont wear well. Life is good. There are many methods you can use to blue the steel. 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. The cabinet is then sealed. 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. You should keep guns in a safe, if you can. 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. Your 700F temp is too high, IMO. Never know when it will come in handy. 3 years ago. I wish I had known more about the process, heating (I was working outside on a 60 degree day) I may have to check with my friend to see if it needs reblued again, Im sure he never shot it. Browning a gun gives you a nice, even brown patina finish of red rust on a gun. Thanks for always being so willing to share, Sir. DG thank you. I can see my wife walking in and shaking her headabout as vigorously as when I asked if I could use the dishwasher to clean some tools. Ill be saving this for the future. Treating with an oiled coating enhances the protection offered by the bluing. 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. -something to hold your object with i.e. *700F is very close to the heat treatment temperature of some steels. Just dont do it. 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. Very true. Keep posting like this. Posted December 21, 2009. 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. -A heat source. Fume bluing is another process similar to rust bluing. 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 However, if the bluing effect isnt satisfactory, then you can try giving the components an acid bath (using Hydrochloric Acid). Thank you, DG! However, the chemicals from the bluing process can accomplish uneven staining on aluminium and polymer parts. Put all the components into the tank and wait for 5 15 minutes. Ferrari installs valve seats in their aluminum cylinder heads via robot. 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. 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. 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 ? 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. 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. Wear thick gloves so you dont burn yourself. This method must not be used on critically heat-treated parts such as receivers, slides or springs. A couple bottles of aged bourbon minimum. If you need to use a blow torch, focus the flame tip on the area you want hardened. The steel was mild steel and had very little carbon content. You can also heat the oil to create different effects. If you have a wood or phenolic handle, use a propane torch to heat the blade only for about two minutes. The tempering reduces the amount of martensite and thus makes the steel softer. 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 can not do this method with Aluminium because it won't reach the temperatures required for bluing, it will just melt. Reply The color is oxide, but I believe you can scrape it off.