Whether you're just starting out in rock tumbling, or you're an old hand looking to save some money this time around, you'll find that buying rock tumbling supplies in sets can be extremely convenient and much cheaper than buying everything separately. That way, you can be sure you have everything you need when it comes time to start tumbling.
Some rock tumbling supplies, like grit and plastic pellets, are often sold in bulk-sized bags. This is great if you're running low on one or two types of supplies, but if you're looking for a little of everything buying your supplies in a kit can be a lifesaver. Most rock tumbling supplies come in sets which can include everything from the tumbler itself plus accessories, to wide selections of various types of grit and polish for use on multiple types of rocks. If you already own the tumbler, consider buying the rest of the accessories in sets to save on shipping costs and to ensure that you'll always have enough for the next project. If you're new to rock tumbling, a starter kit can provide you with everything you need for your first time tumbling.
When you're buying rock tumbling supplies, look for sets that come with various sizes of grit. You'll need a coarse grit as well as at least two finer grits for the polishing process of your rocks. Consider buying a kit that includes polish and other items as well, such as screens to sort and clean your rocks afterwards.
If you're planning on getting into rock tumbling or if you already do it as a full-time hobby, you'll discover that the grit and polish run out very quickly- and once you start tumbling, you don't want to stop and wait for more supplies. So plan ahead when buying you rock tumbling supplies and consider buying in sets.