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National Geographic NGHOBBYTUMBLER Hobby Rock Tumbler Kit

5.0 out of 5 stars 1 rating

New (13) from S$139.10 & FREE Delivery
Hobby Kit
  • EVERYTHING YOU NEED –Tumbling machine, 9 types of rough gemstones (0.5 lb), four polishing grits, jewelry fastenings, educational guide, & instructions
  • PERFECT FOR BEGINNERS – Easy to operate! Features an automatic shutoff timer so you can get bigger results and save energy
  • LEARN AND DISCOVER – Learn about all 9 of the gems included and then explore your own backyard for additional rocks to polish with your tumbler

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Style Name:Hobby Kit

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Product description

Style Name:Hobby Kit

Great way to start a rock collection Learn about the exciting hobby of rock tumbling with National Geographic. This set includes all the accessories you’ll need to start polishing dazzling gems. Rock tumbling is tons of fun and a great way to start an extraordinary rock collection. Kids can use the included jewelry fastening to create beautiful homemade jewelry Contents and Features High-quality tumbling machine with powerful motor that will last for years Automatic shutoff timer so you can set it and forget it Noise reducing leak-proof barrel with stainless steel lid Half pound of gemstones from around the world (9 types) and four grades of grit Jewelry fastenings so you can create your own unique jewelry Full-color information guide with cool facts about each of the gemstones included Easy-to-follow rock tumbling instructions Rock tumbling is a fun activity for children of all ages and promotes an interest in geology and science. Introduce your kid to science the fun way. Join National Geographic as we inspire future generations by showing them the wonders of the natural world. About the National Geographic Society With a mission to inspire people to care about the planet, the 126-year-old National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations. National Geographic’s net proceeds support vital exploration, conservation, research, and education programs.

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1 customer review

28 December 2020
Style Name: Hobby KitVerified Purchase

Most helpful customer reviews on Amazon.com

Amazon.com: 3.4 out of 5 stars 2,452 reviews
5.0 out of 5 stars Absolutely love this!
6 June 2018 - Published on Amazon.com
Style Name: Hobby KitVerified Purchase
758 people found this helpful
Ocean Blue
5.0 out of 5 stars Great Tumbler for Faux Sea Glass for Crafting !!!
15 August 2018 - Published on Amazon.com
Style Name: Hobby KitVerified Purchase
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5.0 out of 5 stars Great Tumbler for Faux Sea Glass for Crafting !!!
Reviewed in the United States on 15 August 2018
Great tumbler for making faux sea glass !!! I bought this solely for the purpose of making "sea glass". It's very quiet due to the rubber cylinder. I use it in a large garden shed where it is drowned out by far by the natural/ambient sounds like spring peepers, crickets, cicadas, wind, rain, rustling leaves, etc. It handles a fairly large amount of glass at one time. The pictures show "before" & "after" of one load of glass... I have my own."formula" for what quantities I use of everything. It only takes 24 hours to make sea glass which looks identical to that which I collect at the beach (one of my favorite things to do). I use beach sand which is available in unlimited supplies. I break colorful glass from wine bottles, thrift shop finds, $1 glassware from a Dollar Store, etc... If your kids get bored waiting a month for rocks to tumble - try a batch of sea glass which is ready in 24 hrs. Just DO NOT let them break the glass or handle broken glass. Also, moms & dads - always wear eye protection when breaking glass (even wrapped in a towel) & use pliers to pick up broken pieces rather than using your fingers !!! Let your kids find colorful glass items at yard sales, flea markets, dollar stores, etc. & ALWAYS take before & after pics of each batch - see my pics - to give them a comparison & the satisfaction of seeing such a transformation take place !!! Finally, NEVER misrepresent tumbled glass as being actual REAL sea glass... use it in mosaics, jewelry & other crafts but always disclose that it is tumbled glass !!!
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610 people found this helpful
B. Diaz
5.0 out of 5 stars Prefect for our 7-year-old
2 November 2016 - Published on Amazon.com
Style Name: Hobby KitVerified Purchase
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5.0 out of 5 stars Prefect for our 7-year-old
Reviewed in the United States on 2 November 2016
**updated review below--- we got shiny rocks!**

We bought this for our son as a 7th birthday gift. It's the perfect mid-range rock tumbler! It's sturdy and doesn't seem like it will break. It's been running now for over 2 weeks. It's definitely not silent, but with its rubber barrel, I suspect it's tougher and quieter than one with a plastic barrel. We keep it in the basement, but can see it'd be annoying if it was somewhere in the house. It has a handy feature where you can set it for up to 7 days and it'll tell you how many days are left- great for a kid! It includes a nice little instruction manual with information about the history of rock tumbling and description of the rocks included. It's a nice, reasonably-priced kit that includes everything you need to start tumbling rocks right away!

Update: now that we've completed a batch, I figured I'd add some info. We still think it's a nice kit! The little sieve that comes with the kit is very handy! Our final stones were smooth and lovely. However, they weren't really shiny. After some reading, we learned that there is a bit of an art to this and we need to be a little more meticulous in the cleaning of the tumbler between grits. Overall, though, our 7-year-old is quite pleased with the kit. We bought the jasper set and will try that next!

Update #2-- SHINY ROCKS!
We did a few batches and couldn't get shiny rocks and we lost interest. My kiddo is now almost 9 but just started becoming interested in geology a lot more. We decided to try again. After reading some about it, I decided to try a better brand of grit and IT WORKED! We bought Rock Tumbler Grit for 3 Pound Tumbler
by Professional Grade Rock Polishing Grit
And followed the instructions **carefully,** making sure to clean the tumbler tub very meticulously after each tumble. We also purchased tumbling pellets (Rock Tumbler "Sinking" Plastic Pellets / Beads Used For Final Polishing & Burnishing Stages) for the final two stages. The new grit had an additional stage which made all the difference. The jade set came out mostly lovely and shiny. They were not all consistently shiny, but I see promise! I added a picture using the flash to show off the polish. We're going to try the nee grit with a different set of stones now.
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1,319 people found this helpful