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Thumler's A-R2 Rock Tumbler - Two Barrels

Thumler's two barrel rock tumbler
Age Recommendation
For use by children ages 14 and up
with close adult supervision.

Find out why.

Thumler's A-R2
Rock Tumbler

We don't know when this tumbler will be available.

rock tumbler kit

Thumler's Two-Barrel Rock Tumbler



Here's what you get in this A-R2 rock tumbler...



    - A high-quality, hobbyist grade rock tumbler.
    - Durable steel base with quality powder-coat paint.
    - High quality, thermally protected motor.
    - Two durable rubber tumbler barrels for
      quiet operation.
    - Process about 2 pounds of rock in each barrel.
    - A booklet: "A Guide for Rock Polishers".
    - Thumler's Tumbler Warranty

To run this tumbler, you will need four pounds of rough rock and two four-step grit kits (one for each barrel). If this is your first time tumbling, we recommend starting with one of our "Easy" small-sized roughs. If you would like to purchase everything needed in a single kit, we offer that below! We also offer refill kits with all rough rock and grit needed to run a 3-pound barrel. For this tumbler you would need to purchase TWO 3-pound refill kits.

This tumbler is perfect for the beginner! A small, two-barrel tumbler is a great choice for your first tumbler or a tumbler that you are giving as a gift. Two barrels give you a lot of advantages:

1) you can tumble more material,
2) you can tumble two different materials,
3) you can tumble rough at two different stages, or,
4) if two people share the tumbler, each person has their own barrel.


You can buy this rock tumbler with confidence:



This is a tumbler that we highly recommend for beginners. You can find less expensive machines on the market, but many of them are made from plastic and have a motor that will not last through more than a few loads of rock.

This machine has durable rollers and bearings that are made to last over years of frequent use. The motor is properly sized and thermally protected. If it overheats it will protect itself by shutting off automatically. The soft rubber barrel is thick enough to last a long time. If you use this tumbler a lot and a barrel, bearing, or belt wears out, you can purchase inexpensive replacement parts and fix it easily yourself. We also have a page that answers many of the common questions customers have had when operating the Thumler's A-R2 tumbler; click here.

Two-Barrel Rock Tumbler Kit

Thumler's two barrel rock tumbler kit

Thumler's A-R2
Rock Tumbler Kit

Temporarily Unavailable











Rock Tumbler Plus Grit and Rock



Here's what you get in this A-R2 rock tumbler kit...



    - A high-quality, hobbyist grade rock tumbler.
    - Durable steel base with quality powder-coat paint.
    - High-quality, thermally protected motor.
    - Two durable rubber tumbler barrels for quiet operation.
    - Process about 2 pounds of rock in each barrel.
    - A booklet: "A Guide for Rock Polishers".
    - Four pounds of rough rock selected for the beginner.
    - Enough grit and polish to process the rough
    - Jewelry Parts - Enough to make 3 necklaces and 3 keychains
    - Thumler's Tumbler Warranty

This kit is the sure and easy way to get started with rock tumbling. Purchase the Thumler's A-R2 and supplies kit. This kit includes all of the supplies that you will need to run the tumbler. It includes four pounds of rough rock that has been specially selected for tumbling success. These are rocks that polish well and are sized just right for a three-pound barrel. The kit also includes all of the grit and polish that you will need in pre-measured packets. Just open the packet and dump into the barrel. Most of the people who buy an A-R2 tumbler from us purchase this kit. It costs less than buying the tumbler and buying the components separately.


Optional Rock Tumbler Accessories:

Many experienced people have a special barrel that they only use for the polishing step. This significantly reduces the chance that grit - embedded within the rubber barrel - will cause scratches on your stones during the polishing step. We always have an extra barrel for each of our tumblers and use that barrel exclusively for the polishing step.

A Rock Tumbler Story:



My father bought a small Thumler's Tumbler in the 1960s and gave it to me as a Christmas gift. I still have it, it still works great, and it has polished hundreds of batches of rocks. Now, over fifty years later, that tumbler is still in service. We use it regularly to test some of the tumbling roughs that are sold on this website.

We keep it clean and oil it regularly. In fifty years it has needed a few new belts, a few new lids, two sets of barrels, and two new motors. The service that we have received from that tumbler convinced me that it has been a durable machine that was made to last a long time.

My father didn't realize that his gift of a tumbler would one day result in a family-owned and operated business that today employs his son, daughter, granddaughter, grandson, and daughter-in-law.

The Thumler's A-R1 and A-R2 tumblers sold on this website are almost identical to the tumblers that were sold 50 years ago. In fact, all of the replacement parts sold today still fit those original tumblers! Very few products persist so long in the marketplace without major changes. Many of our customers are using A-R1 and A-R2 tumblers with their grandchildren that they received as a gift during their own childhood.

The Thumler's MP-1 tumbler, a "beginner's" grade tumbler, was first available for sale in 2009. We bought one of those early MP-1's in 2009 and we are still using it today. It has tumbled dozens of batches of rocks and is still going strong. It still has its original barrel and it still has the original motor. You will not get that kind of service out of a "toy tumbler".

Hobart King
Owner/Manager
RockTumbler.com