Rock Tumbling Grit Calculator
Estimate amounts for a common small rotary method while checking manufacturer guidance.
Estimate amounts for a common small rotary method while checking manufacturer guidance. Results are educational, not a replacement for manufacturer directions. Product recommendations appear only when exact affiliate destinations and key facts have been verified.
Rotary grit planning estimate
This illustrative estimate follows one widely used four-stage rotary method: approximately two level tablespoons of grit/polish per pound of rock and media. Always use the actual instructions for your machine, material and compound. Do not use this tool for vibratory tumblers.
Method reference: RockTumbler.com rotary instructions. This is a planning illustration, not a universal recipe. Do not pour rock sludge down household drains.
How to interpret the result
Use the output as a starting point. Read the linked in-depth guides for technical context and consult the instructions for your actual machine. No tool here conducts a live inventory check or measures the performance of equipment.