I have been looking, but I have not been able to find out the details of how an AR15 lower receiver is anodized. Hey Adam G., It is possible to anodize in just about any acid -- if by anodize you mean make the part anodic and build some sort of film on it -- because almost any acid will conduct electricity. Use the degreaser to clean the part well, then rinse with the distilled water. If you require custom metal products and processes, contact The Federal Group USA today. Anodizing aluminum parts can be an efficient way of adding enhanced mechanical properties to parts or improve their aesthetics. converting metal surface into an oxidized film. Boil the part in distilled water for 30 minutes to seal the surface. Step 2. The amperage is set based on the total surface area being anodized. I suggest getting a big (ie several kilos) carton of bicarbonate from a catering suppler or cash and carry. Anodizing involves cleaning the aluminum part (typically a sheet or an extrusion) and placing it in a tank of acid. Scotch-Brite the Aluminum. Boiling hardens and seals the dye. This mixture can be used many hundreds of times for anodizing runs. If you’re interested in purchasing one for yourself to put a nice finish on a bicycle part, you will need to talk to the sellers and perform thorough research online.  X Research source You can find small aluminum parts for this purpose relatively affordably from most home improvement stores, as well as online. This alkaline bath gives the aluminum surface a matte appearance. Add the agitator. Clean it up with 1200 paper and maybe polish. Read on to learn more about anodizing aluminum at home or in a production factory operation. I plan to face off the side with the mistaken engraving and re-anodize black. Coloring is accomplished either by using dyes during the anodizing process or by painting afterward. Get some good gloves. With most parts its almost impossible to estimate the surface area. Ok, so once you’ve got all the stuff, here’s the step-by-step instructions on how to do this. Heating the dye will increase the speed of colour uptake, however no hotter than 50C or you will start to seal the layer. … Anodizing can also apply a color finish to metal parts by injecting pigment into the surface pores that open up during the electrochemical process. Even a fan blowing on the tank helps. Anodizing at home is doable for the layperson, but many other metal fabrication processes like forging, stamping, and extrusion require a professional manufacturer. An electrical current is passed through the aluminum and an aluminum oxide layer forms on the surface of the part. Add the ping pong balls to cover the surface. Etch the part by dipping in a lye bath for 3-5 minutes. Place a Lead cathode in the bath. The cathode will fizz a lot, the anode will also show some small bubbles. If you think about it, 12v at, say 2 amps, acts like a 24 watt header, and thats before the heat created by the reaction. This oxide layer acts as an insulator and can be dyed in a wide variety of colors. However, these “anodize aluminum at home kits” are meant for very small projects, and they still require in-depth knowledge to ensure safe application. Join our newsletter and stay up-to-date with current news and company announcements. It has a highly ordered, porous structure that allows for secondary processes such as coloring and sealing. The cathode will fizz a lot, the anode will also show some small bubbles. The thermal insulation properties are also outstanding. Putting the DIY anodizing bath on a big sheet of glass is a good idea - keeps any splashed acid off the worktop. Experiment is the key! I don't have an anodizing kit yet, but I will certainly buy one if I can use it to anodize an AR15 lower receiver (7075-T6 aluminum alloy). 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