I'm thinking submersion is going to be my best bet! Need to make a purchase of a large quantity of Gold Agent, and should have enough Brown Darkener (appr. ![]() I attempted to soak brush on the bell of my sax with the Gold Patina/Brown Darkener mixture, and found that Gravity does indeed still exist! The entire amount of surface mixture pooled to the lowest point of the cone, which left some ugly brown coloring and remnants, which were easily wiped off. I tried it ontop of my gold patina, and it didn't react well enough so I didn't photograph. The best homemade ingredient I've found that doesn't completely stink (Such as Ammonia or Hard Boiled Eggs) is a distilled vineger, water, and baking soda. This could also be an issue with hydrogen peroxide, so before doing this to anything of value, I suggest researching possible risks.Īmmonium Chloride was already used It was just a pain inthe butt. Probably the hydrogen in the ammonia penetrated the brass and embrittled it. It was on the verge of crumbling and pieces could be easily snapped off. But once I left a spun brass lamp base in a bath of ammonia, and when I pulled it out, it fell apart. This does tarnish the brass (more slowly than the method above). I used to heat ammonia in a jar and suspend brass screws over it on some cloth afterward. But it definitely works in a bath, and at room temperature just takes longer.īy the way, DO NOT USE AMMONIA. I think this would work brushing on a larger surface, but maintaining an even coating may be difficult. The screws bubble like alka-seltzer, which is always encouraging as you wait. The acetic acid in the vinegar cleans the surface and allows the hydrogen peroxide to oxidize the brass. It helps to clean all oils and waxes from them first with a strong solvent like lacquer thinner. I have been throwing brass screws into the jar of solution, and they darken nicely in about 5 mins. Mix 50% hydrogen peroxide with vinegar and heat it in the microwave. ![]() After some research, I found the following to be cheap and effective: Brass screws for window stops and brass sash hardware is an example. here's one that I just let alone to do its own thing.I restore old houses and I often need to darken/tarnish brass to match the original. just wear it, enjoy it and you will get there. I happen to live where the humidity is high for most of the year and from experience believe that to also be a contributing factor in patina formation.Īs you can see there's more than one ingredient that make up the patina secret sauce and one of them is time. ![]() ![]() The extent of the patina will vary from watch to watch depending on the proportions of the elements used to form its alloy. Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminum, or silicon. Here's a link to a post I did a while back on forcing patina that you might like to look at: Īs I understand it, patina formation aside of what the metal is exposed to, also depends on whether the metal is brass or bronze and the then also the composition of the alloy used by the watch manufacturer.īrass is an alloy of copper and zinc.
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