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Dan&Darci

Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Gift for Kids All Ages : Geology Toy

    • Based on 8,819 reviews
Condition: New
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$79.99 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jun 5
Order within 15 hours and 52 minutes
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Features

  • Turn rough rocks into polished gems: Discover and learn the fun process of rock tumbling with the Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job!
  • Complete kit: Includes: rock tumbler machine, low-noise barrel (1 lb. capacity), 4 grit packets, 1/2 lb. assorted rough rocks, mesh strainer, jewelry fasteners, gem storage bag, and an illustrated easy-to-follow instruction and learning guide booklet.
  • Powerful quality: Runs on a powerful heavy duty motor that will last for a very long time, and includes a leak-resistant barrel that runs quieter than the other brands.
  • Advanced features: Includes speed controls (providing more granular tumbling results), a 9-day timer (shuts off automatically when you desire), all displayed on beautiful LCD screens.
  • A fun and educational gift for all ages: It's not often that a science project can be fun and engaging, but this kit achieves both! It fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age. It fosters a love for science, geology and mineralogy in a fun and exciting way.

Brand: Dan&Darci


Theme: Geology


Age Range (Description): Kid,Adult


Item dimensions L x W x H: 12.99 x 9.06 x 5.51 inches


Educational Objective: STEM


Product Dimensions: 12.99 x 9.06 x 5.51 inches


Item Weight: 5.99 pounds


Item model number: DD009


Manufacturer recommended age: 8 years and up


Is Discontinued By Manufacturer: No


Manufacturer: Dan&Darci


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 5

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.

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Top Amazon Reviews

    • Works great!
The tumbler works great! I can't believe the difference between each cycle. The noise is not too loud considering you are tumbling rocks!!! I placed in laundry room and cannot hear through the walls. They provide you samples to tumble with one packet of each level of grit. So a basic starter kit. I think that is great for any product. I didn't use their sample as I had my own to tumble. So excited to keep using this to tumble my treasures! ... show more
Reviewed in the United States on April 1, 2024 by Nicole
    • First Tumbler, No Regrets
I purchased this as my introduction to rock tumbling approximately six months ago and it has been on non-stop ever since! It's incredibly easy to use with a basic interface and just a few buttons. It can run for a maximum of 9 days without clicking a button and has 3 speeds. Though the instructions say 7 days on each stage, be sure to run it a little longer in stage 1 to get the results you want. Sometimes my stage 1 rocks can last up to 3 weeks! I imagine the manufacturers don't want first-timers getting discouraged when they open their tumbler to find out they have to wait up to 6 weeks for perfectly-polished material. As with all tumblers, it can be rather loud so I opt to keep it in the garage with a cardboard box underneath to absorb some of the vibration. I have yet to replace a band and it's still running as I type this review, I would be lost without it! ... show more
Reviewed in the United States on April 1, 2024 by Fairclo
    • Tumbler works well, but far too little grit is supplied
The tumbler works well enough, it's very reasonably priced, and generally a good kit. The rocks that come with it are a good starter; there are some findings included for finished rocks; and the instructions are reasonably good (accepting some significant caveats below). There's also an included strainer, but we found it much too small, and just used a small colander from our kitchen. Accepting the good points, there are a few important things to consider: 1) The kit comes with a paltry amount of grit. We followed the instructions to the letter using the small grit packets provided in the box, and just couldn't get a good polish on the included rocks. However, we had also bought a set of additional grit at the same time, so we re-ran exactly the same rocks with proper amounts of grit and got a beautiful polish. The additional grit was exactly the same grade and composition as the original, but its instructions called for 2-3x more grit per run. So, I expect a lot of people will be underwhelmed at the polish they get, not realizing that the minimal amount of grit is likely the problem. Since grit is a consumable that you'll need more of anyway, you can save yourself a wasted month of tumbling by buying more grit and just topping off what comes with the kit (2 tbsp for stages 1 and 2, and 1 tbsp for stages 3 and 4). 2) The tumbler runs fast, even at its slowest speed (seems at least twice as fast as the tumblers I'm familiar with). This means it's on the louder end (we kept it in the garage) and it doesn't seem to do a good job on more angular or larger rocks, because the tumbling action is just too aggressive. Anything under 3/4" diameter and/or mostly round will polish up great—which mostly included the rocks that came with our set—but anything outside that ended up with some unpolished edges (although the smooth/flat parts still polished up well). That stated, you can cheat and use mineral oil to mostly hide the rough edges, but they still won't look as good as they do with a proper polish. (Although, I haven't yet tested if ceramic media or poly pellets could improve this situation by cushioning the rocks during the final polish stage.) 3) The instructions could be better with respect to cleaning, and don't cover burnishing at all. For cleaning between stages, after a thorough rinse I strongly recommend putting the rocks back in the tumbler with warm water and a drop or two of dish soap, and then just running it for an hour on its lowest speed. This will clean out all of the grit from the last stage. Then just re-rinse (the sink is fine in this case, since there's so little grit) and start the next tumbling stage. You may want to burnish as a final step, to get a better shine. There are a number of good guides available, so I suggest just searching for the term "rock burnishing". ... show more
Reviewed in the United States on March 13, 2022 by Justin
    • Easy to use, but not built to last
Review Image by GJ GJ
Review Image by GJ GJ
Review Image by GJ GJ
Comes with only enough grit for one set of rocks, must purchase more grit for more rounds. The tumbler pushes the barrel towards one side such that it pushes constantly against the washers on the rollers that keep the barrel in place. It started to wear down a groove in the rubber on the barrel, so I turned it metal cap side towards the washer it was pushing against. This caused wear on the washer. For grit 3, I angled the barrel by propping one side of the base up so gravity would pull it away from the washer as the rollers pushed it towards the washer to balance it in the middle. This was a little better, but I started you see wear/divets on the rollers. It seems like this just isn't build for the repetitive motions needed for days of running for each grit. It takes about a month for each round off new rocks. We have it running in the garage on the other side of the wall as the master bedroom and we can hear it through the wall. My husband thought it was water leaking at first until he found where the noise was coming from. ... show more
Reviewed in the United States on June 6, 2022 by GJ GJ
    • much better tumbler
I have only had it running for seven days but this is five days longer than the previous tumbler lasted. It is running on my garage floor, and I can hear it if I am in the garage, but not in the house. I realy like the digital display and the pause button. Easy to open and check the progress of the rocks. ... show more
Reviewed in the United States on May 6, 2024 by Mark T
    • Works Great!
Polishes rocks beautifully. A little noisy though. Great tool for those discovering rocks as a hobby.
Reviewed in the United States on April 10, 2024 by Debsy
    • Great tumbler!
Easy to use and very effective!
Reviewed in the United States on April 14, 2024 by Amazon Customer
    • He’s outside looking for rocks
My great grandson loves this. He’s out. Looking for different colored rocks,
Reviewed in the United States on May 12, 2024 by Shirley Z.

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