A complete polishing cycle typically takes 3-4 weeks, progressing through four grit stages. The one-touch timer helps you track each stage, with coarse grit taking 7 days and finer stages requiring 5-7 days each.

Yes, StoniGlos Rock Tumbler is perfect for kids with adult supervision. The simple one-touch controls and automatic operation make it safe and educational, teaching patience while creating beautiful polished stones they'll treasure forever.

Most hard stones like quartz, jasper, agate, and granite work excellently. Softer stones like calcite or fluorite may dissolve. The included guide provides detailed recommendations for selecting compatible rocks for best results.

StoniGlos Rock Tumbler operates 75% quieter than plastic models thanks to its rubber barrel design. Most users describe the sound as a gentle humming, comparable to a small aquarium pump running continuously.

Absolutely! While the kit includes starter stones, you can tumble any compatible rocks you collect. Just ensure stones are similar hardness and size for uniform polishing results with your StoniGlos Rock Tumbler.

The included color study guide provides clear visual indicators and timeframes for each grit stage. Generally, when water runs clear and stones show uniform smoothness, it's time to progress to the next finer grit.

Maintenance is simple: rinse the barrel thoroughly between grit stages, wipe the exterior with a damp cloth, and occasionally check the belt tension. The durable construction requires minimal upkeep for long-lasting performance.

The barrel accommodates approximately 1-1.5 pounds of rocks per cycle, enough to polish 15-20 medium-sized stones simultaneously. This capacity balances efficiency with thorough polishing action for optimal results every time.