National Geographic Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults
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Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, Sep 2
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Features
- PROFESSIONAL TUMBLING - The Ultimate Tumbler delivers spectacular results with unparalleled ease of use! With its large 2-pound barrel, 3 selectable speeds; and timer with settings for days and hours.
- QUIETEST TUMBLER - The Ultimate Rock Tumbler's all-new design includes a sound-dampening cover that makes tumbling quieter than ever, perfect for enthusiasts who tumble indoors, or in smaller or shared spaces.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need to get started, including 1 pound of rough rocks, 4 bags of grit, 5 jewelry fastenings, a newly designed strainer, and our exclusive GemFoam rock polisher for a brilliant finish!
- USE GEMFOAM FOR DAZZLING RESULTS - Your tumbled rocks will have an incredible shine thanks to our reusable GemFoam rock polisher. Just add GemFoam and water to the barrel after your final tumbling stage for a brilliant finish!
- HIGH-QUALITY EDUCATIONAL TOYS - We proudly to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is anything less than extraordinary, let us know so we can make it right for you!
Product Dimensions: 16.1 x 7.64 x 13.66 inches
Item Weight: 2 pounds
Country of Origin: China
Item model number: NGULTTUMBLER2
Manufacturer recommended age: 8 years and up
Release date: July 5, 2023
Manufacturer: JMW Sales, Inc.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Sep 2
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
So far it has done well as a newbie-intermediate adult using a tumbler. Controls are not that complex. It is a one large barrel inside the tumbler spinner box. The hexagon-shaped knob holds the metal lid down onto the rubber barrel and rubber suction holds the half-rubberized inner lid inside in place so be careful when trying to open the inner barrel for first time. So, opening it - try wiggling it side to side open helps. It gets better over time. There are jewelry making items, foam polishers, a strainer (amazing to find) and handful of rocks included with the tumbler. At first when I got it, I initially thought I didn't get the accessories - like the grits and rocks but it's inside the barrel when you get it, which is why I included the picture. The very lowest setting was relatively quiet like a semi-loud washing machine (you are dealing with rocks remember), but you can soundproof it by putting it into a kitchen or hall cabinet or by other means. It's a machine so it needs to have air. Be careful to check the machine over long periods for overheating, belt wearing (strange noises) or issues like leaks (which I haven't had yet). I do a day or two at a time and take the rocks out of tumbler, strain the waste water into reusable disposable bottle/container and then reuse the tumbler water and try again the next day (to give machine a chance to rest) so that I can sleep from the noise (this might take longer and more steps but being in apartment or the sleep hours bothering people, this method might work before the grit sand water separate overnight might keep it from set into a cement-like substance on the rocks. I learned from other tumblers - DO NOT put the any tumbler rock water down the drain because it will wreck your pipes, clog and/or cement it up. I don't have a yard to dump it safely but put the tumbler waste into disposable milk or other containers as I use separate gloves, dollar store funnel and tote storage lid to help clean up without getting everything on the counters. Tips- check the local hobby shops for grit, they might carry it in bulk but sometimes it might be cheaper online for a smaller box. I haven't tried the foam accessories yet, so I don't know how well they work. Do the research on tumbling, be aware of the risks - watch for any health symptoms or what not. I came across some stuff about some Quartz crystals to be cautious about. Cheaper isn't always better choice over sound quality. I looked around locally for any tumblers, but everything was too cheaply made or way too loud for my usage in an apartment building. This one is better quality tumbler, compared to the cheaper department store brands like Maxx brand Tumbler or National Geographic cheaper blue "cup" tumbler which looks too flimsy or cheaply made to do quality work. I had been looking around for a quieter one and I have seen that Harbor Freight store had double barrel rock tumbler with no rock attachments or anything to cover to muffle the sound, but I had difficulty trying to figure out how to safely open their tumbler when I got it. I return that back to Harbor Freight and tried this one. So far, this specific rock tumbler was wider than other brands and has done rather well in sound and durability.
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Reviewed in the United States on March 15, 2025 by ANNA S. ANNA S.
The media could not be loaded. Santa really came through this year! He brought my 5.5 year old a rock tumbler. He’s neurodivergent and his special interest has been gemstone collecting the last couple years. He’s found some really cool raw amethyst and carnelian, so I thought it might be fun to polish them. This thing is SO quiet (for a rock tumbler). This is the first time I’ve used one since I was a kid. My bro had one in the 90s and I remember it being so loud! It was in the corner of the garage and sounded like rocks in a dryer. I’m impressed with how easy it was to set up. The instructions were easy to follow for beginners. At first I thought they forgot to add the raw stones and grits, but they were inside the barrel. The polishing grit packets are one-time-use only, so I made sure to get some refills for future batches. The raw stones it came with are so pretty. He got a huge piece of tiger’s eye! He added some moonstone and fire opal. I’m curious to see how the small chips turn out…. Will they grind down to sand?!? Like I said, the barrel is pretty quiet considering it has a ton of rocks! He has it in his bedroom for white noise, lol. The settings are easy to figure out. The screen is bright and pretty. Love the little cover to dampen the sound. So far so good. I’ll update in a month! EARLY UPDATE - ok so we’re about 12 days in and on Grit #2. It’s working so well!!! It’s simple enough that he can change the settings (timer and level) by himself. I love that we can pause it to check on it. I put reminders in my phone to check it 2x/day just to make sure it’s not getting hot or too loud. There’s a ton of powdery sand already! The edge of the rocks all smoothed down in about 3 days. Now we’re watching some turn into little chips…. There’s still a lot of big ones, but it seems like half or more of the raw stones it came with will turn into sand or maybe tiny sparkles. Bummer. So excited to see how they turn out! Update: they’re SO PRETTY!!! Took us 6 weeks because we forgot about them sometimes 😅
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Reviewed in the United States on January 2, 2025 by Sarah Sarah
My first tumbler. Great directions. Came with a smoke pkg of each grit. (I need to buy more) It takes patience, this is not an over night or even a 2 week process... but it's worth it.
Reviewed in the United States on May 16, 2025 by Leslie Gibson
Motor went bad quickly. Got a ! error and motor started smoking. Our tumbler has barely been used. This seems to be a common problem after looking it up when trying to find a replacement motor. Replacement motor specs are not available anywhere. You have to trust that someone on Reddit has figured it out and are giving the correct replacement advise. I'm currently waiting for the motor replacement suggested from an eBay seller (only place to find the motor).
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Reviewed in the United States on April 29, 2025 by jason waterbury