Plastic Pellets cushion rocks to avoid scratches and cracks. They also Permit the slurry that your tumbler produces flow freely. Use two tablespoons for each pound of rocks. You may need to have the ability to count on your machines, operators and consumables to remove variables out of your process https://crucible-sagger83704.blogdosaga.com/28386097/about-fracture-toughness-of-silicon-carbide