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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

MSRP $235.10
Our Price: $209.99

Tumbler Only

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 up to 2 pounds of material in each barrel.
  • A booklet: "A Guide for Rock Polishers".
  • Thumler's One-Year Limited Warranty
  • Warranty begins on the date of purchase.


  • To run this tumbler, you will need between one and two pounds of rough rock for each barrel and two single-use grit kits (one for each barrel). 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

    Only $279.99
    Tumbler and Supplies











    Rock Tumbler Plus Grit, Rocks, and Media



    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 up to 2 pounds of material in each barrel.
  • A booklet: "A Guide for Rock Polishers".
  • Two packages of rough rock selected for the beginner.
  • Enough grit and polish to process the rough.
  • Two packets of large ceramic media.
  • Jewelry Parts - Enough to make 3 necklaces and 3 keychains.
  • Thumler's One-Year Limited Warranty
  • Warranty begins on the date of purchase.


  • 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 two packages of rough rock that have 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 it into the barrel. We include 4 packets of coarse grit so you can run the coarse grit step twice, if desired. We also include 2 packets of ceramic media.

    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.


    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