Thumler's Tumbler Model B Large Rotary Tumbler Casting Machines & Equipment The Guardian II is now

The Guardian II is now the dominant locking earring back system on the market

available separately from Otto Frei:

Manufacturer Part Number F180 Filter Type Cartridge Filter Compatible Unit Quatro Gold Vault Original Version (also known as GoldVault Deluxe) Compatibility

Total carat weight range: 1-1/4 ct – 1-1/2 ct (diamond weights)

reduce speed and apply additional lubricant

Thumler's Tumbler Model B Large Rotary Tumbler Casting Machines & Equipment The Guardian II is nowThe Thumler's Tumbler Model B Large Rotary Tumbler is a heavy duty rotary tumbler designed for continuous burnishing, polishing, cutting, and surface finishing applications. Built for jewelry studios, lapidary work, and general mass finishing, it steadily processes parts over long cycles for consistent results. The low, steady rotation and rhythmic motion create a methodical finishing action that works around the clock with minimal supervision.