I'm using Lyman tumbling media and a Berry's Tumbler. I have become a bit disappointed in the lifespan of this media, even though I have taken to prewashing the brass before tumbling. The dust just builds up and then the brass no longer comes out shiny.
I found lots of good suggestions on this forum to combat this - adding dryer sheets, cotton balls, or cut up shop towels. I didn't have either, but I did have some scraps of split grain leather. It's the kind that is rough on both sides.
I cut it into little strips. Then added a twist. Soaked them in a bowl of water. Then add to the tumbler with the lid open. As they dry out and coat with green/black dust, pluck them out, rinse in the water, and drop them back in. The bowl of water quickly turned black. The next day, the water evaporated and there was a thick layer of dust on the bottom of the bowl. The tumbler bowl was also nice and clean after this, with little dust.
Then when your media is nice and clean, you can revitalize it by loading the strips with buffing compound. I used the green, chromium compound, which seems like that's what lyman uses to begin with.
I found lots of good suggestions on this forum to combat this - adding dryer sheets, cotton balls, or cut up shop towels. I didn't have either, but I did have some scraps of split grain leather. It's the kind that is rough on both sides.
I cut it into little strips. Then added a twist. Soaked them in a bowl of water. Then add to the tumbler with the lid open. As they dry out and coat with green/black dust, pluck them out, rinse in the water, and drop them back in. The bowl of water quickly turned black. The next day, the water evaporated and there was a thick layer of dust on the bottom of the bowl. The tumbler bowl was also nice and clean after this, with little dust.
Then when your media is nice and clean, you can revitalize it by loading the strips with buffing compound. I used the green, chromium compound, which seems like that's what lyman uses to begin with.
Last edited: