Complete polishing typically takes 3-4 weeks through four stages using progressively finer grits. The 7-day digital timer helps you track each stage precisely, ensuring optimal results with every batch you process.

Most semi-hard to hard stones work excellently, including quartz, agate, jasper, and aventurine. Avoid soft stones like calcite or selenite. The included guide provides detailed recommendations for optimal stone selection and preparation.

The RotaRoki operates remarkably quietly thanks to rubber-lined barrel technology. Most users describe it as a gentle humming sound, comparable to a refrigerator, making it suitable for indoor use anytime.

Absolutely! The RotaRoki includes comprehensive instructions and a beginner-friendly guide. The straightforward design and digital timer make starting your rock tumbling journey easy, with professional results from your very first batch.

The barrel accommodates approximately 1-1.5 pounds of rocks per batch, depending on stone size. This capacity is ideal for hobbyists, providing enough volume for impressive results without overwhelming beginners or requiring excessive processing time.

Simple maintenance involves rinsing the barrel after each stage and occasional motor housing cleaning. The durable construction requires minimal upkeep, and the leak-proof design prevents grit buildup, ensuring long-lasting reliable performance.

Yes, the RotaRoki's reliable motor and leak-proof design allow safe unattended operation. The programmable timer automatically tracks progress, and the quiet operation won't disturb sleep, making overnight tumbling convenient and worry-free.

Use four stages: coarse grit (60/90), medium grit (120/220), fine grit (400), and polish (aluminum oxide or cerium oxide). Each stage runs approximately 7 days. This progression ensures smooth, brilliant gemstone finishes.