Double the Capacity. Legendary Reliability.
The Lortone 33B Rotary Rock Tumbler has earned its reputation as one of the most trusted dual-barrel tumblers ever made. Whether you're polishing your first batch of agates or running multiple batches every week, the 33B offers the perfect combination of capacity, durability, and dependable performance.
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Unlike single-barrel tumblers, the Lortone 33B includes two independently removable 3 lb rubber barrels, allowing you to process up to 6 pounds of material at once. You can tumble two different batches simultaneously, keep one barrel for grit while the other is just for polishing, or simply increase your weekly production without needing a second machine.
Designed with a continuous-duty motor and heavy-duty steel frame, the 33B is built for the long tumbling cycles required for beautiful, high-gloss stones. Many hobbyists have been running these machines continuously for years, making the 33B one of the most respected tumblers in the lapidary community.
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Key Benefits:
- Dual 3 lb. barrels let you tumble more at once—Use your grit for one barrel and your polishing stages in the other barrel, or run two batches simultaneously for double the polishing speed.
- Heavy-duty upgraded motor for smoother operation and longer life
- Compact footprint fits easily on workbenches or hobby tables
- Quiet operation with long-lasting rubber barrels
- Perfect for polishing a variety of rocks, minerals, and glass
Specifications:
- Barrel Capacity: Two 3 lb. rubber barrels
- Base Dimensions: 6.25" W x 10.25" L
- Shipping Weight: 20 lbs
Built for Quiet Operation
Each barrel is molded from thick, durable rubber that naturally absorbs sound while tumbling. Compared to plastic barrels found on many inexpensive tumblers, the rubber barrels help reduce operating noise while also providing excellent durability through years of continuous use.
Two Independent 3 lb Barrels
Each barrel holds up to 3 pounds of tumbling load for a total machine capacity of 6 pounds. In practice, you'll achieve the best results when each barrel is filled approximately 2/3 to 3/4 full with a combination of rocks, grit, and water. Proper barrel loading allows the stones to tumble efficiently while minimizing unnecessary wear.
Having two separate barrels also makes cleaning between grit stages much easier and helps prevent cross contamination.
Continuous Duty Motor
Unlike inexpensive hobby tumblers designed for occasional use, the Lortone 33B features a continuous-duty motor designed for the extended use of a rock tumbler.
A complete 4-stage tumbling cycle takes several weeks or months, dependable operation is one of the most important features of any tumbler. The 33B has built its reputation on reliable, around-the-clock performance.
Durable Steel Construction
The steel base provides a stable platform while precision rollers keep both barrels rotating smoothly throughout every stage of rock polishing. The simple mechanical design also makes routine maintenance straightforward, with genuine Lortone replacement parts readily available if needed.
What Comes Included
Your Lortone 33B includes:
- 1 rotary tumbler
- Two 3 lb molded rubber barrels
- 1 Innerl lid & 1 outer lid
- 1 gasket
- 1 knurled nut
- Operating instructions
Complete Your Rock Tumbling Setup with the Optional Lortone 4-Step Grit & Polish Kit with Plastic Pellets and Assorted Rough Stones
If you're new to rock tumbling, don't forget that the tumbler is only part of the process. To transform rough rocks into beautifully polished gemstones, you'll also need the proper abrasives and polishing compounds. Our optional Lortone 4-Step Grit Kit with Assorted Rough Stones provides everything you need to start tumbling right out of the box, making it the perfect companion to your new Lortone 33B.
Included With The Kit
The optional starter kit includes:
- Premium coarse silicon carbide abrasive for shaping rough stones
- Medium silicon carbide abrasive for removing coarse scratches
- Aluminum oxide pre-polish for smoothing the surface before the final polish
- Aluminum oxide polish for producing a brilliant, glossy finish
- Plastic Pellets for cushioning softer stones and using in the polishing stages
- An assortment of rough stones including agate, jasper, and petrified wood ready for tumbling
The Lortone 33B Rock Tumbling Kit pairs the 33B tumbler with Lortone's complete 4-step polish kit and rough rock, giving beginners everything they need to start their first batch immediately.
The Four Stages of Rock Tumbling
Every successful rock polishing project follows the same basic progression:
Stage 1 – Coarse Grind
The coarse silicon carbide grit removes sharp edges, smooths rough surfaces, and shapes the rocks. This is the longest stage of the tumbling process and lays the foundation for a beautiful finished polish.
Stage 2 – Medium Grind
The medium grit removes the scratches left behind during coarse grinding and further refines the surface.
Stage 3 – Aluminum Oxide Pre-Polish
The aluminum oxide pre-polish smooths the stone even further, preparing it for the final polishing stage.
Stage 4 – Aluminum Oxide Final Polish
The aluminum oxide polish brings out the natural colors, patterns, and shine hidden inside the stone, producing the glossy finish every rock tumbler hopes to achieve.
Why Choose the Complete Kit?
Instead of sourcing abrasives and rough stones separately, the complete kit provides everything needed to begin tumbling with confidence.
Benefits include:
- Everything a beginner needs to get started.
- Includes all polish & grit needed to tumble 18 pounds of stone.
- Premium abrasives manufactured to precision for the ultimate performance
- Assorted rough stones to begin your first batch immediately
- Eliminates the guesswork of selecting the correct grits
- Works perfectly with the Lortone 33B's two 3 lb barrels
Whether you're purchasing your very first tumbler or giving one as a gift, adding the optional 4-Step Grit Kit with Assorted Rough Stones ensures you'll have everything needed to start polishing as soon as your tumbler arrives.
Start tumbling smarter and more efficiently with the Lortone 33B—crafted for consistency, built to last.
