Been using this on my copper and brass mod's, works very wellWhite vinegar or tomato ketchup.
Then I polish it up with a good metal polish.
Been using this on my copper and brass mod's, works very well
https://amazon.com/Wrights-Copper-Cream-8-oz/dp/B0083PEZ00
I just make sure I give it a good rinse.Thank you for the recommendation, have just placed an order for a tub,