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Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel
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Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel

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About this item

  • Belt-Free Direct-Drive Motor: No more worries about broken belts! The direct-drive motor delivers efficient power with 35dB silent operation. The rock tumbler runs cool even after extended use, ensuring a longer lifespan for endless rock-tumbling fun.
  • Upgraded 9-Speed Control: This rock polishing machine features an easy-to-use operating panel, allowing you to choose from 1-9 speeds and 1-9 day timer. Whether you're an 8-year-old beginner or a rock collection enthusiast, you'll enjoy effortlessly polishing gemstones to create crafts comparable to those of a master.
  • DIY Fashionable Decor: Let your imagination run wild and create your own stone art! Built with a durable cold-rolled steel base for steady operation, this stone polishing machine is designed for long-term use without deformation or damage.
  • Smart Safety Design: The stone tumbler features an upgraded curved lid design for easy and hand-secure twisting. The high-seal chamber prevents water leakage and keeps your workspace clean. It also features a grooved handle for easy lifting and anti-slip pads to keep the machine stable during powerful operation.
  • Perfect for Parent-Child Bonding: The rock polisher is a fun and educational high-quality toy that boosts creativity and imagination. It includes a detailed user manual and a built-in power-off memory feature—no need to worry about power interruptions. Once power is restored, it resumes exactly where it left off, delivering a polished, efficient finish every time.

Frequently Bought Together

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Rock Tumbler Machine 4 lbs Rock Polishing Kit 9 Speed 9-Day Timer Steel
Direct Drive Motor Rock Tumbler Kit
Experience quiet 35dB motor operation and power-off memory—all designed to make rock collecting engaging and hands-on. Unleash creativity, foster imagination, and create your own unique stone jewelry art today!
The rock polishing machine is equipped with advanced protections for secure, long-lasting use. Features include anti-electric shock, fire and water leakage resistance, power-off memory, and noise reduction—letting you safely and quietly enjoy the tumbling process.
Choose from 9 precise speed settings tailored for each tumbling stage, with a timer extending up to 9 days. Simply set the stone tumbler and let it work, freeing up your time for other activities.
Our stone polishing machine is built with a cold-rolled steel body for durability, providing rock enthusiasts with stable, long-lasting performance. It is resistant to wear and deformation, ensuring your tumbler stands up to extensive use.
The rock polisher features an upgraded barrel design with high sealing and an easy-to-twist-off lid. The thoughtful grooved handle and anti-slip pads keep the machine steady and secure during operation.

Specification

Item Model Number
KD-C3021
Size
9.1 x 7 x 8.3 inch / 230 x 178 x 210 mm
Net Weight
7.7 lbs / 3.5 kg
Material
ABS,Cold-rolled Steel
Color
Black, Orange
Barrel Size
Φ 5.1 x 6 inch / Φ 130 x 152 mm
Dimensions without Barrel
9.1 x 7 x 3.9 inch / 230 x 178 x 100 mm
Questions and Answers
Typical questions asked about products: Is the product durable? ...

Customer Reviews

89 Review(s)
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CLNeslon CLNeslon
Mrs
I purchased the Rock Tumbler as a gift, so am not able to totally rate this item. I did the basic inspection. The tumbler arrived in a timely manner and had everything in it that was in the listing.
Bev1955 Bev1955
Quiet!
Everything a first tumbler should be ! Grandchildren love it . Aged 2- 17 along with Grandma. Easy to use but needs better directions.
J J
Great item
My rock tumbler works great so far. It is very easy to use. Barrel does not seem to leak. I am very happy with my purchased item.
Rock Tumblr Rock Tumblr
Rock Tumblr
Just as described, works great my daughter loves it OK I guess I have to say more about it. Happy with the product.
Robert Taylor Robert Taylor
Quiet and intuitive
We bought this to replace a starter rock tumbler that we wore out, and so far we're quite satisfied with it. Things that we like about this product: - Feels solidly constructed, especially for the price. - The drum capacity is a definite upgrade from the usual starter model (almost 2.5x over our previous model). - The direct drive motor is super quiet, and the overall operation is very quiet even with a full drum. - Ceramic media is included with the kit, where most starter kits only include some sample grit. - The interface is intutive to use and the settings are stored between power cycles. This surprised us when the settings we last used came back at power-on after the unit was unplugged to move it. - The included sample rocks shipped in nice reusable plastic cases instead of a plastic bag.
Not Happy Not Happy
Roller
The tumbler will not run for more than 20 minutes. I have tried to remove rocks, water, and media. Many times it won't turn. It just gives a E1 code that does not clear. The unit must be unplugged to allow me to change anything. I can't pause the unit only start. After unplugged for 20 minutes the motor was hot to the touch after not having ran the previous attempt. Chat started VEVOR Welcome to VEVOR, our agent is attending to you, please wait a moment! avatar Rowan joined the chat Rowan Hi, thank you for your message, I would be more than happy to assist you. Could you please send us the order number which is similar to VEVORAU12345 or 22021800984806169891? avatar Rowan Could you kindly provide us with some pictures or videos? So that we can locate this issue and solve it as soon as possible. You can upload the videos or photos by Wetransfer (https://wetransfer.com/) and then provide us the link to your photos or videos. You must select the 3 points next to send and select the option to get a link avatar What exactly are you wanting photos/pictures of? Rowan Pictures showing the problem Please avatar The overheating problem, I do not have access to a infrared camera. I can show the E1 error code. I'm not an expert and I do not know what the problem is. Rowan yes Please avatar I need to plug it back in and run it again, just to get the E1 error. Take the picture and upload it so you can see that it is an E1 code? I'm afraid its overheating, you want me to plug it back in? Doesn't sound safe to me. Rowan In order to open a warranty request for you please confirm the following: 1- Please tell us more details about your product issue. 2- Please provide us with pictures or a short video showing the problem in a good lighting. After confirmation, we will provide you with a satisfactory solution. avatar I'm just asking for assistance, I'm not sure I need the warranty. Unless you are telling me that I must have warranty to get assistance. Type a message here...
Kyle M. Kyle M.
Works great!
Definitely does the job. VERY VERY quiet and durable. Speed control works great. Its nice you get 2 packs of different material so you have a control and can compare the tumbled to what it looked like before. Great value.
Becca Becca
I needed a tumbler…
Recently started working with copper for jewelry and wanted a Tumbler. It’s easy to use, but the inner lid is very difficult to put in evenly so the top part will screw in evenly and be secure. It actually started to leak and I had to take it out and try it again. You definitely need abut the inner lid is very difficult to put in evenly so they top part will screw in evenly and be secure. It actually started to leak and I had to take it out and try it again. You definitely need a butter knife to pry out the inner lid. I have no idea how this compares to other brands but it seems to do what it’s supposed to.
Roman_LA Roman_LA
Good
good product. easy to use. need to wait a long time for the stones to be polished
stephanie stephanie
Good but noisy
It works good, I wish it had came with instructions for how long to tumble rocks for when using each grit stage. It worked fine for the first week, then it started making this squeaking noise when it's on. I don't know why or if there's something wrong with it but it works fine besides that noise.

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