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best home bluing
dgac
Member Posts: 694 ✭✭✭✭
I have a old carcano with a crack in the stock and about 10% metal finish left. I got it for a good price of free. I know how to do the wood but I've never refinished metal. What materials should I use? I got it to practice on so I'm open to any suggestions.
dgac
dgac
Comments
Van's Instant Gun Blue - http://www.vansgunblue.comBlue Wonder - http://www.bluewonder.us/BlueWonderGunBlue.html
Van's is by far the easiest to use and fastest, and produces a grey or black color, depending on the length of time applied. It's great for small parts like screws, too - just degrease, heat with a hair dryer, then let them soak for two minutes. Instant black!
Blue Wonder produces a nice deep blue but has to be wiped on as several coats. Small parts and crevices are a pain. I did have a shotgun barrel turn out beautifully, though.
http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=950056
Otherwise I have done hot water bluing with Herters Belgian Blue with great success. Just need something you can boil the parts in.
OleDuk[:)][:)]
This depends on what your interests are with this gun.
If you want a quick and dirty job, I'd get any of the cold blueing solutions and use them. AS EARLIER STATED: Surface preparation is everything. Take the time and most cold blues will be acceptable, but half-assed surface prep = a so-so end result.
If you are interested in making this gun a test bed to gain more experience doing various gunsmithing operations, you might want to try, as greystone said, the acid blueing method. This is interesting, because the color you get depends to a large extent upon what acid or acid compound you use. Once again, though, surface preparation will determine the quality of the end result.
Acid blueing is nothing more than hanging the prepared gun parts:
(a) inside a humidity cabinet with
(b) heat source,
(c) a pie plate full of water and
(d) a small plate of acid compound, either a commercial preparation or your own recipe.
The humidity cabinet can be a wood frame covered with visqueen, cardboard or thin plywood, a large appliance cardboard box lined with visqueen, an old refrigerator, etc., that you can keep pretty well free of outside air.
The heat source can be a 75 watt light bulb.
The air inside gets warm, the plate of water and the acid compound begin to evaporate. The warm water vapor and acid fumes deposit on the steel and the steel begins to oxidize (rust) The acid causes the steel to color. Next day, you remove the parts and card them (scrub with steel wool or a soft wire brush). This removes the light coat of rust, leaving the color. You boil the parts in a pan of proper size, make sure they are clean with no oily residue and put them back in the humidity cabinet for another treatment, repeating as desired until you are satisfied with the color.
There is an old book out there, circa 1935(?) by R. H. Angier called Firearm Blueing and Browning. The book's been reprinted numerous times, so a copy should be available somewhere for $10 - $20. This is a very interesting, informative and educational book with various early gun finishing processes and containing probably 100 or more different blueing and browning recipes for acid rust blueing, plus many other useful pieces of information.