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National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls
Details
- SizeMittel
- BrandNational
- ThemeGeology
- Age range (description)8 years +
- Item dimensions L x W x H22.8 x 15.2 x
Description
✨ Turn Rocks into Treasures! ✨
- GIVE BACK - 27% of proceeds support National Geographic!
- EASY POLISHING - Includes 4 grades of grit for perfect shine!
- STEM FUN FOR ALL - Engage young minds with geology and science!
- UNLEASH CREATIVITY - Craft stunning keepsakes with 5 fastenings!
- NOISE REDUCING DESIGN - Enjoy a quieter tumbling experience!
The National Geographic Rock Tumbler Machine is an engaging STEM educational kit designed for kids aged 8 and up. It includes everything needed to polish gemstones, featuring 9 varieties of gems and 4 grades of grit. With a user-friendly design, auto shutoff timer, and noise-reducing features, this kit makes for a perfect gift while supporting the National Geographic Society.
Specifications
| Product Dimensions | 22.8 x 15.2 x 15.2 cm; 1.18 kg |
| Manufacturer recommended age | 8 years and up |
| Item model number | 37137 |
| Educational Objective(s) | Creative Skills, Hand-Eye Coordination, STEM |
| Assembly Required | No |
| Batteries Required? | No |
| Material Type(s) | Plastic |
| Colour | Multicolor |
| Release date | 5 July 2021 |
| ASIN | B09B18PJNT |
Have a Question? See What Others Asked
Reviews
M**T
My daughter seems happy with it.
Quite noisey as you would expect. Easy to use.
N**R
Happy Customer
This rock tumbler is exactly as we hoped . We have polished stones with it and are very happy
G**0
Good started tumbler
Purchased as a Christmas gift. For my granddaughter all ready she is asking for a bigger one. The stone capacity is small so on reflection I should have gone for a bigger one. But it does what it says on the tin.
H**
Bad buy
Very noisy, worked fine for 1st week, cleaned it out put same rocks for 2nd phase turned for 6 hours then stopped!!Waste of time and money, grandkids disappointed
M**R
Doesn’t rotate unless you add a rubber band or similar.
The surface of the tumbler is too smooth therefore no friction to turn it against the motor. We added a rubber band, which then snapped and got caught in the motor, so then added a line of superglue. Great product otherwise but big design flaw.
N**S
Great tool for geology fans...
This requires patience, a separate room and brute strength! Let me start with the positives. Your boring, dusty rocks will be transformed into beautiful, shiny rocks in a variety of colours perfect for jewellery making and gifting to friends. It isn't a quick activity; a full cycle will take a month to reach the finished product. The tub is incredibly difficult to open; children won't be able to do this on their own. It is NOISY. The rock holder crashes the stones around and there is no let up, the further into the gritting process, the louder it gets and I mean LOUD. We had to keep it in the utility room and could still hear it upstairs. All in all, a great gift, just remember to eat your spinach and buy ear plugs alongside it! We have multiple additional packs of stones but will give it a break in between the next batch!
M**M
After a few uses it does not work
The tumbler won’t turn at all after using it a handful of times. Very disappointing and I would like to return it
C**Y
I've followed the instructions to the letter
This is a good idea BUT it stopped spinning on me several times. I just gave it a wee spin and it was away again . My daughter is watching what is happening to the stones very carefully. I hope it doesn't disappoint her
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