The selection of the tumbling media is entirely dependent on your part size, shape, and complexity. The media that is capable of doing good edge rounding work will not be good for getting a smooth finish on the surface. You may have to tumble the parts initially with one type of media for edge rounding and followed by another media for polishing.

Some media will take more time to finish when compared to others. The material removal from the parts will be more with some media. You should select the shape and size in such a way that it should be able to reach all the areas in part for an efficient finishing process. At the same time, the media should not get lodged in the parts. Tumbling Media Inc offers different shapes like cylinder, ball, ballcone, pyramid tetrahedron, tristar, and many more. So, you can select one from these.