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Well, both the walnut and corncob media (I use both, one in each tumbler) started losing some effectiveness a while back. Didn't have any NuFinish handy, but I did have some Brasso. Of course, I'd read the warnings about the ammonia in Brasso making the brass in the shells more brittle.
Turns out there's a safe way to do this.
Take your typical vibratory tumbler, say a Frankford Arsenal model, with the cleaning medium in it. Turn it on and let the medium tumble. From the standard-sized Brasso container (I think it's about 8 ounces), squeeze about a third of the bottle's contents kinda-sorta gradually into the medium. It'll look clumpy at first, but it'll distribute pretty evenly in about 10 minutes.
Do not put the lid on the tumbler yet. Let it tumble overnight, preferably outside. You can also let it run during the day while you're at work. This will evaporate the ammonia. Now, you can safely tumble your brass in it, and it'll look great afterwards and last as long as if you used NuFinish.
Hopefully this helps someone.
Turns out there's a safe way to do this.
Take your typical vibratory tumbler, say a Frankford Arsenal model, with the cleaning medium in it. Turn it on and let the medium tumble. From the standard-sized Brasso container (I think it's about 8 ounces), squeeze about a third of the bottle's contents kinda-sorta gradually into the medium. It'll look clumpy at first, but it'll distribute pretty evenly in about 10 minutes.
Do not put the lid on the tumbler yet. Let it tumble overnight, preferably outside. You can also let it run during the day while you're at work. This will evaporate the ammonia. Now, you can safely tumble your brass in it, and it'll look great afterwards and last as long as if you used NuFinish.
Hopefully this helps someone.
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