How severe do rock tumblers damage coins?

[Pointman]

I use a tumbler and gravel which is similar to aquarium gravel. I do not use dish detergent since it is harder to rinse out than a cap full of mister clean. I now take my tumbled clad to many vending machines and turn them into clean coins that I can then roll and deposit into my bank account without any hassle. I used the coin-star once and it rejected many coins that some vending machines would take. No more coinstar for me. Just think I might come across some silver coins out of the vending machines. Just today I exchanges $25 in quarters and $15 in dimes using 3 vending machines at the local Walmart. Once the vending machine begins to give me my discolored clad back, I move to the next one and continue.

You have a lot of free time on your hands, lol.

Good idea if you don't have a choice. I have a 3 lb coffee can full of clad and counting. It would take a lot of vending machines to convert his much.

I do the gravel and dish soap method in my tumbler. Takes about 45 minutes for about a pound of clad. I bet you could use borax detergent also. I use borax to tumble rocks along with the grit. Keeps the foaming down.

 

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[T.C.]

The only thing about using the gravel and dish soap is, a longer time for clean up on your tumbler barrels. Another thing Pointman, try using Dove soap flakes for burnishing your rocks. I take a carpet knife and shave flakes off of the bar of soap and add about a tablespoon of flakes to 3 pounds of rock. Try it, it really shines up your finished rocks!!

You have a lot of free time on your hands, lol.

Good idea if you don't have a choice. I have a 3 lb coffee can full of clad and counting. It would take a lot of vending machines to convert his much.

I do the gravel and dish soap method in my tumbler. Takes about 45 minutes for about a pound of clad. I bet you could use borax detergent also. I use borax to tumble rocks along with the grit. Keeps the foaming down.

 

[Rick (Nova Scotia)]

I use a tumbler for a few things, some old relics, and harness buckles, ox knobs etc.
Some of those crusty unIDable pennys can turn into surprises, Ive got at least a couple of IHs out of the tumbler I did not know I had.

I like to add a table spoon of sand as well as the gravel.