Big 5 Soprting goods or a gun store
Try Brownell's
Most gun shops, sporting goods stores, on line. Please note that cold bluing products generally do not work as well as hot, professional bluing.
There are several reasons bluing will not take on a gun. One is it stainless steel. Nope. Two is the bluing solution correct. If so, is the temperature correct, Brownells has bluing info for their solutions., follow these almost perfect. Also to be blued, it must be alloy steel. not pot metal, not cast, just steel. Don't get any brass, copper, zinc or lead in the bluing solution. lcjones
You won't. Too many people were trying to use it to make meth.
Birchwood Casey makes a chemical that removes bluing. In addition, Naval Jelly, a popular rust remover, will also remove gun bluing. (Bluing is a form of rust) Be certain that you are dealing with blued steel, and not anodized aluminum. A magnet will not stick to aluminum, but both the Birchwood Casey product and Naval Jelly will corrode aluminum alloy very quickly.
Gun bluing is not mixed with coal. Most hot gun blues are a caustic chemical, and will eat holes in your body if you handle it wrong. I have a vague recollection of growing crystals on a lump of coal when I was a youngster- recall that it used ammonia, and liquid LAUNDRY bluing. In the pre-bleach days, laundry bluing was added to rinse water for white clothes, and made them look whiter. Have not seen it in years. If you are growing a crystal project, try adding a few drops of liquid food color.
Gun Digest (and others) sells books on restoring antique guns. The big tips are to take your time and be careful. You can't put the patina back after you remove it. Go to this site (or eBay) for books: http://www.krausebooks.com/category/firearms_knives 000 steel wool will take the rust without removing bluing.
Mrs. Stewart's Bluing was created in 1883.
An easy gun bluing formula can be made by mixing copper sulfate, sodium hydroxide, and distilled water in specific proportions. The metal parts are immersed in the solution to create a corrosion-resistant blue-black finish. It's important to follow safety precautions and proper ventilation when working with these chemicals.
Simmons Gun Repair and Sales Inc. 700 S. Rogers Road Olathe, KS 66061 (913)-782-3131
The chemical formula for cold gun blue is typically a mixture of selenium dioxide (SeO2) and sulfuric acid (H2SO4). It is used as a solution to create a blued finish on gun metal surfaces.