Any gun store that sells reloading supplies. It is used for polishing brass casings. Don't recall what it cost but wasn't much.

Creighton

I wanted to add that I use that car wax "Nu-Finish" (in the orange bottle) as an additive to the walnut shells in my tumbler with brass and they co,me out looking like brand new.

I add pieces of paper towel and run it with just the towel pieces when the media gets a but nasty and that picks up most of the dirt.

I never tried chrome drum parts in there, but I'm sure walnut shells and Nu-Finish will make them look as good as they can.

What ratio of wax to walnut shells are you using? I have the larger 18# Harbor Freight unit and only fill it about 1/2 full of shells, and wondering how much liquid wax should add to this type of mixture?

Thanks

I'm not quite that scientific about it I'm afraid... I just squirt a generous helping on top of the shells and let 'er rip!Cool1

After the shells all turn black (cleaning brass) I run the towel strips through for an hour or so. Maybe repeat the towels a few times if you want.

Then I add some more Nu-Finish if I feel the need.

I suspect it will take more to 'load' the tumbler initially, but once you have a good amount of the Nu-Finish in there, it should only need 'topping up' when you clean the media with the towel pieces.

Hope that helps!