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 designed for long, unattended runs. Each molded rubber barrel holds up to 3 lb, allowing you to process two batches at once for burnishing, cut-down, or lapidary work. Made in the USA by Tru-Square Metal Products (Thumler’s), stock number 114.

Key Features

• Two independent 3 lb molded rubber barrels (6 lb total capacity)
• Continuous-duty rotary action for uniform, repeatable results
• Versatile use: burnish with steel shot and compound, cut down with plastic/ceramic media, or run lapidary grits
• Quiet operation thanks to rubber barrels
• Made in the USA

Specifications

How to Use

• Burnishing: Fill each barrel with stainless steel shot, water, and a small amount of burnishing compound. Run for several hours to brighten and work-harden parts.
• Cut-Down: Use appropriate plastic or ceramic media with detergent compounds for more aggressive material removal.
• Lapidary: Run staged silicon carbide grits followed by cerium oxide for polishing stones.

What’s Included

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

Applications

• Jewelry burnishing and deburring
• Small hardware and castings
• Lapidary/rock tumbling

Pros & Cons

Notes / Care

• Do not exceed 3 lb per barrel; total load includes media, parts, and liquid.
• Rinse barrels and media after use; avoid grit carryover when changing processes.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.