As posted in this thread, cut up 1" strips of a bounce sheet and throw it into your tumbler. Change it every time you tumble. It will pick up the dust and dirt and remove any static from your media. This is also said to prolong the life of your media.
I also agree with adding the Nu-Finish car polish, it makes brass sparkle.
I have also been told to pick up a bag of crushed walnut from PA.



























