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Hi Murray.
Thanks for the information. I threw all my darkroom chemicals away many years ago. Didn't think that I would be likely to use them again. Things like potassium ferricyanide are probably best disposed of and not left lying around the house.
Hi Michael.
Thanks for that. Hope to have it on in a day or two.
Interesting discussion going on. If I may suggest trying some of your commmonly found liguid drain cleaners. I know many of them have label warnings stating they are not to be used on different types of metals.
From personal experience I know how they will tarnish stainless stain when my daughter poured some down the kitchen sink to fix a grease clog. Cost me more than a few bucks and a weekend to replace it.
Michael,
Old chemistry coming back...the suggestions for bleach (chlorine gas) and urine (ammonia) are not bad. Another one that's cheap and available is Coca-Cola (phosphoric acid). Try this: get two 1-liter bottles of Coke. Put your brass in the first one for a week. Remove, expose to air. Look for etching, discoloration (no, not itching and discoloration!). If no joy, on day 7, drink the other liter of Coke, starting at 7 AM so you don't stay up all night. At around 8 or 8:30 AM, put your (hopefully) phosphoric-acid-etched brass in Bottle 2. Release the pressure on your bladder by peeing into Bottle 2. Wait another 24 hours. Empty nasty-smelling container into your obnoxious neighbor's prize begonias, and blame it on the cat. Expose your brass plate to the air for 24 hours.
You should have developed a patina. Your neighbor certainly will have :-)
Check out my latest build I had a very shiney tin sink drainer. Used spray on olive oil and cooked on high for about an hour. the coating on the sink drianer was pretty thick so it looks more like shellac. But a very light coating aged the fittings really well.
I know not a genuine patina but chemical free and gives the look for cheap.
On lamp parts, I have used the same formulas and solutions that stained glass artists use to age copper and copper foiled lamps.
On brass, though, you do have to heat it up.
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