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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 9,067 reviews
Condition: New
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$79.99 Why this price?
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 25
Order within 19 hours and 19 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.

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: Monday, Nov 25

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

    • Worked great for my dirty coins.
I’ve had a large container full of crusty coins from when I used to metal detect and they didn’t wash off well until I purchased this roller. It works perfectly. I had to rinse and repeat a few times cause some of the coins were so crusty but over all the majority of them went right through the coin machine. Would highly recommend. ... show more
Reviewed in the United States on November 9, 2024 by Charles Griffith
    • It’s cool!
Review Image by officegrl3 officegrl3
The media could not be loaded. Instructions were easy to follow. The box had all the pieces and grits - no missing parts. It seems yo be functioning well. It’s loud-ish. I have it on my screened-in porch, but we can’t hear it inside. Almost like a white noise. My kids and I were on the porch playing with cardboard boxes and the sound didn’t bother us at all. We could easily hear each other over the sound. ... show more
Reviewed in the United States on July 8, 2024 by officegrl3 officegrl3
    • 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, good life.
Purchased October 2021, died June 2024, motor locked up after almost constant running. Not bad for what I consider an entry level tumbler.
Reviewed in the United States on June 14, 2024 by Father3Bear
    • The rock.
Around and Around it goes. You would want to use it in the garage or other location because it's noisy but it does the rocks.
Reviewed in the United States on September 18, 2024 by Amazon Customer
    • Sturdy little tumbler
We have run ours continuously for 3+ months. Mostly we just make sea glass over a 5 day period but we did do the rocks that came with the tumbler and they turned out great. Rocks take about a month compared to five days for sea glass. We are still using the original rubber drive belt too. Have not had to replace it. ... show more
Reviewed in the United States on November 11, 2024 by Amazon Customer
    • 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
    • Perfect Gift
Quality product. Quick delivery. Perfect gift for a rock hound.
Reviewed in the United States on October 17, 2024 by Nmtatum3

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