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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!
Unique Gift Idea
Although 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 Project
Whether 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 Kit
Everything is included - just add water!
Includes:
- Rock Tumbler Machine and Barrel
- 0.5 lb Assorted Rough Rocks
- 4 Grit Packets
- Mesh Strainer
- Jewelry Fasteners
- Rocks Storage Bag
- Learning Guide
Illustrated Learning Booklet
Easy 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.
Customer
2025-09-06 14:08:50
This rock tumbler let's you put in days of tumbling and speed to tumble. I've run it for 7 days with the coarse grit, now working on second cycle. Happy with the tumbler.
officegrl3
2025-07-30 17:18:22
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Justin
2025-07-21 17:35:25
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".
Jackie M.
2025-06-15 15:04:40
Great machine. It is a little noisy but I just put in another room.
Andrew Eisenberg
2025-05-24 10:20:17
I often collect rocks wherever I go, I have for years, and I’ve wanted to get a rock tumbler for some time. When my daughter expressed interest finally getting one was an instant no-brainer. I liked the look of the Dan&Darci machine; it looked solid and stable, it was professional looking. I liked that it had multiple speeds and a multi-day timer.As soon as we got it my daughter couldn’t wait to get started. The machine was as solid and sturdy as it appeared and the instructions were very clear and easy to follow. We put in the rocks, grit, and water, sealed the barrel and turned it on. It made much less noise than expected.We’ve had this running for a while; no issues, no leaks, no problems … many jealous friends and family members...
Sylvia Brown
2025-04-20 21:58:19
I'm having a great time with this tumbler. Perfect for this newbie. It's not just for kids. I'm 81.
Dolly
2025-04-12 14:09:22
My son loves this. Great for new rock lovers.
RHUSA
2025-03-07 19:30:39
Purchased this for our grandchild we used to have a different brand years ago.This is a very nice kit to get started and the unit runs surprisingly quiet
Alex
2025-02-25 16:58:17
I have been using this so much! I love making my rough beach rocks smooth and shiny. I have quite the dragon board morning stones now. It is loud, but no louder than a washing machine, so I keep it in the laundry room and barely notice it. 10/10
Detlef Bruehl
2025-02-24 13:18:06
Die Trommel ist aus relativ festem Gummi und hat ausreichend Platz für 5 Kieselsteine mit ca. 5cm Durchmesser. Packt man zu viele Steine in die Trommel, dann dauert das Polieren länger oder funktioniert nicht weil die Steine sich nicht genügend bewegen können. Die Trommel ist dicht und läuft ganz gut… allerdings mit einem hörbaren Geräusch. Am besten man stellt den Tumbler in die Garage und lässt ihn dort laufen. Man kann die Drehzahl einstellen und mit einer Tages Laufzahl einstellen nach wie vielen Tagen das Gerät sich abschalten soll.Wichtig ist, dass die die Steine sich gut bewegen und die Trommel dadurch rund läuft.Na ja, und immer wieder betone ich das man Zeit braucht. Nach 5 bis 7 Tagen kann man dann die Trommel öffnen und den Inhalt ausspülen… Trommel und Deckel reinigen und mit der nächsten Poliermittelstufe befüllen… frisches Wasser einfüllen… Trommel gewissenhaft und mit Gefühl verschließen und los gehts.Viel Erfolg.
Franz K.
2025-01-20 16:11:28
Il tient toutes ses promesses. Le mode d'emploi devrait être plus détaillé à mon avis. Produit à se procurer, d'ailleurs je vais de ce champs en recommander 1 autre.
PRIMOPIANO
2025-01-13 13:03:57
Kit completo per iniziare a lavorare
Endurance
2025-01-09 10:21:58
Muy educativo, mi hijo está encantado.Pero hay que tener paciencia, tarda muchos dÃas 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.
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