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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
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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
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Purchase options and add-ons
Brand | Dan&Darci |
Theme | Geology |
Age Range (Description) | Kid,Adult |
Item Dimensions LxWxH | 12.99 x 9.06 x 5.51 inches |
Educational Objective | STEM |
About this item
- 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.
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Product information
Product Dimensions | 12.99 x 9.06 x 5.51 inches |
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Item Weight | 5.99 pounds |
ASIN | B07Q32W334 |
Item model number | DD009 |
Manufacturer recommended age | 8 years and up |
Best Sellers Rank | #5,673 in Toys & Games (See Top 100 in Toys & Games) #4 in Kids' Rock Tumblers |
Customer Reviews |
4.5 out of 5 stars |
Is Discontinued By Manufacturer | No |
Manufacturer | Dan&Darci |
Warranty & Support
Feedback
From the brand
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We are Dan & Darci! As you can tell from our name, we think that two are better than one. That’s why we create quality toys and science kits that are BOTH entertaining AND educational. Our lab of mad scientists develops the coolest products for kids ONLY — because they know that while you love to grow your brains and be the smartest one in the room, you’re only going to do it if you’re having fun!
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Education Made Fun!
Product Description
Welcome to the fabulous world of rock tumbling!
For thousands of years, Mother Nature has been tumbling rocks in water and sand to make them smooth and shiny. Now it's your turn!
Collect all types of rocks and turn them — yourself — into colorful gemstones. Make your own jewelry, use them in crafts or decorations, or just collect them for fun!
Get the Dan&Darci Advanced Rock Tumbler, bring your curiosity, and get your gem collection started now!
ABOUT US:
We are Dan & Darci!
As you can tell from our name, we think that two is better than one. That’s why we create quality toys and science kits that are BOTH entertaining AND educational.
Our lab of mad scientists develop the coolest products — because they know that while you love to grow your brains and be the smartest one in the room, you’re only going to do it if you’re having fun!
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Unique Gift IdeaAlthough this is extraordinarily educational, it’s also wildly entertaining for all ages, which makes it an excellent gift! It’s not often that a science project can be fun and engaging, but this kit hits the nail on the head and fascinates children and adults as soon as they pull it out of the box. |
Perfect STEM ProjectWhether you’re a parent or a schoolteacher, you’ll quickly appreciate the vast knowledge that this can provide. While being super fun and engaging, this one product provides young students with that essential hands-on experience they need to truly absorb this priceless knowledge and information. |
Complete KitEverything is included - just add water! Includes:
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Illustrated Learning BookletEasy step-by-step instructions so that everyone can follow along easily. Also included is a comprehensive learning guide on the history of rock tumbling, and explanation of all the rocks included in the kit. |
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Customer Review: Great product, Noise quality video included!
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the fun and appearance of the rock tumbler. For example, they say it's a good hobby starter, it produces beautiful tumbled stones and that it' s easy to use. That said, some disagree on size, value, quality, noise, and performance.
AI-generated from the text of customer reviews
Customers find the product easy to use. They mention that the instructions are well-written and easy to follow. The tumbler is great for beginners and has the power you need. They also say that the product is well-suited for smooth and efficient classroom use.
"...The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰...." Read more
"...are some findings included for finished rocks; and the instructions are reasonably good (accepting some significant caveats below)...." Read more
"I like how easy it was to use, the down side is it’s very loud when in use" Read more
"...A nice touch.Instructions couldn't be easier. If you can read and understand this review, you will have no problems...." Read more
Customers like the appearance of the kit. They mention that the rocks are beautiful and the process is long. The kit is quiet and produces beautiful, shiny and round rocks after 30 days.
"...This little guy has produced some beautifully tumbled stones and now I can’t stop!!..." Read more
"...I’m on the second cycle right now and they looked BEAUTIFUL when I cleaned them off. I love this little machine and wish I could get numerous more!!!..." Read more
"...Overall product also appears nice and well built (with it being a gift I didn’t use it so I can’t attest to the functionality)." Read more
"...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)...." Read more
Customers have fun with the rock tumbler. They say it's a fun little hobby, a good hobby starter, and a great gift for youngsters. The small barrel makes it perfect for trying new things without having to waste, and the whole kit is a nice little place to start tumbling.
"...Good hobby starter, good array of accesories. Only turned off twice in to 30 days runs. Dont try and save and reuse the grit. Just buy more." Read more
"...The rocks look great and they enjoyed tumbling both ones that came with the machine and also rocks they found while hiking." Read more
"...It was easy to use and helpful for quite a few fun projects at work (preschool teacher)...." Read more
"...Great product for a fun “set it and forget it” sort of project." Read more
Customers are mixed about the performance of the science fundamentals kit. Some mention that the machine does work well, while others say that it stopped running and was showing 'E' for error.
"...The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰...." Read more
"...It seems like this just isn't build for the repetitive motions needed for days of running for each grit...." Read more
"...this to tumble coins I find metal detecting and it works perfectly for my needs. Definitely need to run this where the sound won’t bother you...." Read more
"...It's a great starter and gets the job done... just on a smaller scale. So I would've had to drag my process out for months...." Read more
Customers have mixed opinions about the noise of the science fundamentals kit. Some mention that it makes much less noise than expected, while others say that it is much noisier than anticipated. Some customers also mention that the product sounds like a waterfall or fountain.
"...I let mine run inside a plastic cooler and it muffles the sound to almost nothing." Read more
"I like how easy it was to use, the down side is it’s very loud when in use" Read more
"...The second thing is that it seems much quieter than I expected. I think the fact that the drum is overmolded with rubber helps a lot in that way...." Read more
"...The machine is so loud that we had to put it in the basement garage...." Read more
Customers are mixed about the quality of the science fundamentals kit. Some mention that the drum and base unit both seem to be very nicely built, while others say that it just breaks after one year. The tumbler itself also has signs of wear and tear, with the rubber on the barrel starting to wear down a groove. Overall, the opinions are mixed, and it's recommended to read the reviews carefully before making a purchase.
"...The rocks that come with it are a good starter; there are some findings included for finished rocks; and the instructions are reasonably good..." Read more
"...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...." Read more
"...first thing I noticed was that the drum and base unit both seem very nicely built. The second thing is that it seems much quieter than I expected...." Read more
"...And it isn't. I can only conclude that crap materials were used and the wheel came out of alignment after being used for 18 hours...." Read more
Customers are mixed about the value of the rock tumbler. Some mention that it's worth every penny, while others say that it was a total waste of time. The rocks that came with it were extremely disappointing, and the barrel shift does not stay.
"Not a good value. Barrel is tiny. I haven’t used yet but would go with different one. Small generic bag of rocks included...." Read more
"The tumbler works well enough, it's very reasonably priced, and generally a good kit...." Read more
"...It displays an E right away and the motor won't turn. Very disappointing...." Read more
"...from Polly Plastics here on Amazon as they have a solid and reasonably priced kit...." Read more
Customers have mixed opinions about the size of the tumbler. Some say that it's small, perfect for a hobbyist, and can fit about anywhere. They say it reduces the size by half, and is good for small batches. Others say that the barrel is small and limited to the number of rocks you can tumble, and that the drum is small.
"I like the unit, is good for small batches of stage one and stage two...." Read more
"...There's also an included strainer, but we found it much too small, and just used a small colander from our kitchen...." Read more
"...The size is perfect for a hobbyist and it’s easy to use." Read more
"Much quieter than the Harbor Freight 3lb model. The tank is smaller so cannot do as many rocks at a time, but the noise factor makes it much more..." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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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.
Reviewed in the United States on June 6, 2022
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.
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".
Top reviews from other countries
Pero hay que tener paciencia, tarda muchos días en pulir las piedras... algunas quedan del tamaño de una lenteja otras no. No desgastan por igual por su dureza y tamaño de origen.
Pero buen regalo.
Dont le tonnelet spécifique paraissait ni remplaçable (où le trouver en "pièce détachée" ?), ni à nouveau réparable; déjà trop déformé par des rustines (dommage parce que la base moteur était encore bonne, et économe en courant).
Donc ce modèle me semblait bien, car si le tonnelet venait à s'user, il semblerai qu'un tonnelet assez standard, comme ceux de marque Lortone; petit modèle, (pièces détachées trouvables plus facilement, taille presque identique) puisse aller sur la base.
Voici ce que je peux dire après quelques jours d'utilisation :
Ses points forts :
-économique en courant, comme les "national geographic", (beaucoup plus économe qu'un lortone; qui fait aussi "chauffage d'appoint").
-les perfectionnements électroniques; décompte de jours, vitesse réglable ; avec une vitesse minimum assez lente :très bonne pour les finitions, fonction "pause" assez pratique pour regarder le contenu sans perdre le décompte des jours.
Ses points faibles :
-petit volume du tonnelet
-se met en indisponible ("erreur") si la masse des pierres est trop grande, avec un seuil assez bas:
de simples calcédoines, qui ne sont pas les pierres les plus lourdes, au 2/3 du tonnelet ne passaient pas, j'ai du en enlever 2 ou 3, remplacées par des morceaux de bouteilles de verre brisées, pour respecter le niveau de chargement tout en l'allégeant.
Donc pour le moment satisfait, à voir si fiable dans la durée.
edit : en mars 2021 .
çà roule toujours, il marche comme il faut, et rempli avec du verre cassé criblé au dessus de 6-8mm, usé; qui a donc déjà un peu tourné dedans, et de l'eau ; a 1/2 : j'obtiens les meilleurs polis que j'ai eu sur les quartz, calcédoines, et autres pierres dures. Je pense que la petitesse du tonneau empêche les chocs de haut en bas sur une hauteur plus importante, néfastes pour les finitions. le contact des pierres avec le médium verre, et entre elles est donc assez doux. Le revers de la médaille d'un petit tonneau, c'est que pour les finitions : on met peu de pierres (entre 1 et 5 environ) dans le verre, sans quoi la qualité du "poli" diminue; car elles s'entrechoquent d'avantage entre elles ; sujets durs, qu'avec le verre (dépôt amorphe) .