Restoring brass artifacts

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I find using warm tomato sauce / ketchup. smother the object you want cleaning in the stuff, let it sit for 10-15 minutes in a warm location, soft tooth brush and or sponge will get most tarnish off easily enough
Gonna take a lot of ketchup for this!
 

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Gonna take a lot of ketchup for this!
For a wheel, I would just get it blasted. Wouldn't take them more than two hours and it would look like new if that is what you are going for.
 
Patina is not a dirty word.
 
Thick/Heavy Brass items:

Remove as much growth as possible with hammer, scraper or other tool, then use muriatic acid or swimming pool acid mixed with water about 50%. Soak, scrape some more and repeat scraping until all of the calcareous growth is removed. Once the growth is removed, take to a professional polisher who will make it shine like gold.

Small delicate brass items:

Electrolysis

Or

Use a propane torch to burn off any growth, then lightly polish with a Dremel or copper/brass cleaners. Nevr Dull is a good product to use.

Sealing:

Once the polishing is complete, use acetone to remove any polishing compound or residue of other cleaners used, then spray with a clear spray paint, lacquer, varnish, etc. to seal the brass from moisture in the air and reduce tarnishing.
 
https://www.shearwater.com/products/teric/

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