This process improves the polishing and grinding as it tumbles in the rotating barrel. It resembles little ball bearings allowing your stones to tumble smoothly. The purpose of the plastic filler is to protect and cushion fragile stones during tumbling. This material is compatible with any tumbler. It contains a pound of 60/90 coarse silicon carbide grit, a pound of 180/220 silicon carbide grit, a half-pound of five hundred fine silicon carbide, a half-pound of 1200 aluminum oxide polish, and one pound of premium high-impact polypropylene plastic filler pellets. You can use this kit in a fifteen-pound tumbler or five times in a three-pound tumbler. Polly Plastics Rock Tumbler Tumbling Media Grit Kit & Plastic Filler PelletsĪ complete, four-step grit package that includes a plastic filler, the Polly Plastics kit includes all you need to uncover the shining potential of your gemstones. By drawing on rockhounding expertise and analyzing product reviews through Fakespot, each of the grits comes recommended by the genuine people that use them.īuy on Amazon 1. To help you find the perfect grit for your tumbler, we’ve put nine options together with complete four-stage sets or individual bulk-buy grits to choose from. Most commonly with Aluminum oxide (also, tin, chrome, and cerium oxides, depending on your rocks) Finally, it’s time to polish the rocks.Third, a pre-polish tumble using a fine silicon carbide grit (typically 500 grit).Secondary smoothing tumble using a medium silicon carbide grit (typically 150/220 grit). ![]() Initial shaping tumble, using a coarse silicon carbide grit (typically 60/90 grit).As a rule of thumb, follow this four-step process to achieve the best results: Much like sandpaper, grit comes in varying abrasive consistencies that are to be utilized at different stages of the process. Similar to sanding down wooden furniture, the grit in your tumbler provides an abrasive substance to remove imperfections, finesse the shape and bring out the natural patterns and colors that lie under the surface. Shaping, smoothing, and polishing your rocks into things of beauty. Sure, you’ll need some nice rocks to start with, a robust tumbler, and a load of patience to boot, but the transformation only happens once the grit works its magic. If there’s one key ingredient that brings out the best results in rock tumbling, it’s quality grit.
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