Thumler's Tumbler Model A-R2 Double Barrel Rotary Tumble

The Thumler's Tumbler Model A-R2 is a continuous-duty double-barrel rotary tumbler built for long, unattended runs. Each molded rubber barrel holds up to 3 lb, giving you 6 lb of total processing capacity across two independent batches. Suited for jewelry burnishing with steel shot, cut-down work with plastic or ceramic media, or staged lapidary grinding and polishing, the A-R2 delivers uniform, repeatable results with quiet operation. Manufactured in the USA by Tru-Square Metal Products under the Thumler's Tumbler name, stock number 114, Otto Frei part number 147.782.

Features

• Two independent molded rubber barrels, 3 lb capacity each — 6 lb total including media, parts, and liquid
• Continuous-duty rotary action for consistent, repeatable mass-finishing results
• Suitable for burnishing with stainless steel shot and compound, cut-down with plastic or ceramic media, and lapidary grit sequences
• Rubber barrel construction dampens noise during extended runs
• Designed for long, unattended operation
• Made in the USA

Specifications

What's Included

• A-R2 tumbler base (110V)
• Two molded rubber 3 lb barrels with lids
• Basic instructions

Notes

• Do not exceed 3 lb per barrel — total load includes media, parts, and liquid combined.
• Rinse barrels and media thoroughly after each use; avoid grit carryover when switching between processes.
• Rotary tumbling is the slowest mass-finishing method and is not intended for final polish on broad, flat surfaces.