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This is a 1 lb rock tumbler with a direct-drive motor, a TPU drum, and a soundproof cover that keeps noise at or below 35 dB. It offers a 1–9 day timer and 1–4 speed settings for flexible polishing cycles. It suits beginners and hobbyists who want a quiet, compact machine for small batches of stones. Compared with belt-driven tumblers, it runs quieter and needs less maintenance, but its 1 lb capacity is smaller than many rivals.
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Lowest price we've seen: $41.52 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
This rock tumbler polishes rough stones into smooth, shiny pieces. It uses a belt-free direct-drive motor and a 1 lb (0.45 kg) TPU drum. A PC soundproof cover reduces noise to 35 dB or less.
A control panel sets a 1 to 9 day timer and 1 to 4 speed levels, so the polishing can be adjusted for each stone. It works on rough raw stones or pre-polished materials. Stones are refined in stages to a smooth finish.
The drum is fully sealed. The tumbler has overload monitoring and power-loss memory, and it runs on a low-voltage design with layered protection features. A complete set is included.
