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KomeStone Double-Barrel K4 Rock Tumbler with Brushless Motor & Noise Cancelling Technology
This is the brand flagship store owned by KomeStone, as the original manufacture and brand outlet, KomeStone brand owns the designs of itโs all rock tumbler models.
KomeStone provides the top-of-line manufacturer advanced professional rock tumbler kits, featuring with all functions and accessories you need to master rocks tumbling and polishing.
The KomeStone K4 Double-Barrel Rock Tumbler is the first and only tumbler equipped with a cutting-edge brushless motor and soundproof cover, providing ultra-quiet operation and a longer lifespan. This innovative design ensures smoother, quieter tumbling, making it ideal for rock collectors, hobbyists, and professionals who require consistent performance.
We offer lifetime troubleshooting support and free replacement parts for all accessories. For more information and to explore the full range of our double-barrel rock tumbler kit, please visit our official KomeStone flagship store.
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Important๏ผReach out to us immediately after placing your order and weโll provide you with a bag of tools to replace belts or as a backup. Plus, youโll also receive an extra bag of rocks to get more practice right away!
Notice: If there is any part missing, please kind take a moment to reach out for a replacement or the compensation.
Should any concerns arise, rest assured, we're dedicated to swift solutions. Instead of frustration, kindly connect with us for assistance.
Rock tumblers transform raw rocks into stunning gems for jewelry, crafting, and collections. To achieve an exceptional shine, use high-quality grits, soap water, mineral oil, and follow the precise tumbling steps.
If you need tips for getting smoother rocks, feel free to reach out to our teamโweโre here to help! Remember, practice makes perfect.
FAQs About KomeStone Rock Tumbler Kit
1. How Much Weight Can Each Barrel Hold?
- Each barrel can hold up to 3.5 lbs of rocks, so with both barrels, you can tumble a total of 7 lbs. Including water, polishing powder, ceramic pellets, and other additives, each barrel can handle up to 7 lbs, and together, both barrels can support a total weight of 14 lbs.
2. Will the Belt Break?
- The timing belts are made from rubber and fiberglass (9 strands), making them strong and resistant to breakage. These belts are designed to last and won't slip easily. While they may show some wear over time, it won't affect their performance. Each tumbler comes with 2 beltsโone installed and one as a backup. If your belt ever breaks, just reach out to us, and we'll send you the replacement at no cost.
3. Encountering a hiccup with your rock tumbler?
- First, consult our FAQs in the instruction book or on this page. For product concerns, connect with us directly. Our dedication to unparalleled service ensures swift resolutions.
Your satisfaction is paramount. Trust that we're dedicated to elevating your experience and swiftly addressing every matter.
Dan
Reviewed in the United States on January 19, 2025
If you're new to rock tumbling and you do enjoy tumbling your stones you probably would like to do twice as much product Don't look any further this product is awesome It has the BEST BARREL'S & LIDS on the market double insulated The lids are twice as thick as any other ones on the market for a beginners value , also has brushless motor design which is twice as reliable as a brushed motor and twice the longevity , well built unit for the price . Unless you're using a professional machine this will fit all of your needs usually the professional equipment cost at least twice $349.00 as much to start , if not three times as much $700.00. At that level it's a completely different ballpark.
Mary B.
Reviewed in the United States on January 18, 2025
This machine is not capable of a full load of rocks . I put more rocks in my small machine. The machine does not stay running.i give this product no star.
Jordan M. Moore
Reviewed in the United States on April 27, 2025
Donโt waste your money because by the time you realize itโs a total piece of crap it will be past the 30 days and is too late to return. You will go through belts like crazy. So then they will send you a kit to rebuild the belt system, but it only makes it run like crap, overheats and shuts off. It will only spin one barrel half full an makes it Hella slow, on the highest speed #4 it only spins about as fast as speed #1 on my single barrel one. Itโs definitely a certified P.O.S. Needs a bigger motor and or bigger belt pulley system to operate correctly that would make it an awesome lil set up.Youโre better off buying 2 single barrel ultra quiet units they work great I highly recommend. I have owned one longer than this double barrel and have had no problems with it at all
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