Thumler’s Tumblers Rotary Tumbler Model B

Heavy-duty capacity and dependable performance for serious hobbyists and professionals.

The Thumler’s Tumbler Model B is built for users who need large-batch capability, consistent results, and a machine tough enough to run for days at a time. With its full-size 15-lb rubber barrel, reinforced construction, and powerful motor, the Model B is the go-to choice for lapidaries, reloaders, and anyone needing a reliable high-capacity tumbler.

Key Features & Benefits:

Large 15-Pound Capacity Rubber Barrel

The Model B’s single heavy-duty barrel holds approximately 12 lbs of rock (or brass, metal parts, or media) plus grit and water. Its thick, soft rubber design reduces noise and ensures smoother action for superior polishing results.

Rugged, Powder-Coated Steel Base

Made to handle continuous workloads, the Model B sits on a solid steel frame with a durable powder-coated finish that resists chips, corrosion, and years of heavy use.

High-Quality Motor with Thermal Protection

The powerful, continuous-duty motor is engineered for extended run times and includes built-in thermal protection to prevent overheating. Run long polishing cycles with confidence.

Designed for High Volume & Efficiency

The generous barrel size lets you process large roughs, bigger batches, or oversized stones you can’t fit in smaller machines. It’s also a favorite for cleaning brass casings and metal parts thanks to its smooth, consistent tumbling action.

Quiet Operation for Its Size

Even with its larger workload, the thick rubber barrel keeps noise levels down, making it ideal for garages, workshops, and hobby spaces.

Dependable Results for Advanced Users

The Model B is ideal for experienced tumblers who want a capable machine that can take on demanding work without slowing down. Whether polishing agates, shaping rough, or cycling heavy loads, it delivers consistently beautiful outcomes.

Whether you’re scaling up your production, moving into larger stones, or looking for a durable workhorse that delivers reliable, high-volume performance, the Thumler’s Tumbler Model B is a trusted, long-lasting machine ready for your biggest tumbling projects.