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NSI Rock Tumbler Classic

245 customer reviews
| 21 answered questions

Price: $53.09 & FREE Shipping. Details
Only 15 left in stock.
Sold by Toysonics and Fulfilled by Amazon. Gift-wrap available.
  • Change rough stones into beautiful, high luster gemstones
  • UL listed heavy duty rock tumbler
  • Includes: Rock Tumbler machine, rough semi precious stones, grit, polish, jewelry settings, and glue
  • Detailsed instructions included
  • Ages 10 and up
37 new from $39.99 7 collectible from $29.96

PowerWheels_Girls
$53.09 & FREE Shipping. Details Only 15 left in stock. Sold by Toysonics and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

NSI Rock Tumbler Classic + Classic Crafts Rock Tumbler Classic Refill + 2 POUNDS OF A 12 Stone Mix from Madagascar rough gemstones labradorite, rose quartz, septarian, green opal, desert jasper, apatite, amethyst, petrified wood, girasol opal, red jasper, yellow jasper & chrysocolla
Price for all three: $78.39

These items are shipped from and sold by different sellers.

Buy the selected items together

WARNING:
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Product Description

Product Description

NSI Rock Tumbler Classic

Amazon.com

It may be a grind to wait nearly 30 days to create polished rock jewelry with the Rolling Stones Rock Tumbler. But, as the makers write, "you are grinding in days what it takes nature thousands of years to do in a stream, river, or ocean." So, find a clean, remote area with a properly wired outlet where the constant tumbling won't disturb others (and where curious little hands won't wreak havoc), and start rolling. The first step involves assembling and lubricating the tumbler itself. Once the two-cup, plastic barrel rolls easily atop its 10-inch-long and 6-inch-high plastic base, it's time to open the small bag of gritty stones that comes with the kit. Constant maintenance and much patience will reward the owner with shiny stones in about one month. A small sampling of jewelry settings and findings is provided, along with order forms for gold-tinted accessories. --Liane Thomas

Product Details

  • Product Dimensions: 13 x 5 x 13 inches ; 3.6 pounds
  • Shipping Weight: 4.7 pounds (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00000ISUU
  • Item model number: 635
  • Manufacturer recommended age: 10 - 18 years
  • Amazon Best Sellers Rank: #7,057 in Toys & Games (See Top 100 in Toys & Games)
  • Average Customer Review: 3.0 out of 5 stars  See all reviews (245 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Discontinued by manufacturer: Yes
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Important Information

Safety Warning
Danger:To prevent electric shock do not immerse in water. Wipe clean with a damp cloth.

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

716 of 739 people found the following review helpful By A Customer on July 19, 1999
I bought NSI's Rock Tumbler, for my grandson, the budding geologist. While there are many different tumblers out there with a wide range of prices, I chose to buy NSI's brand because of its high quality and low noise. I'm familiar with NSI as I initially purchased the Rock Tumbler for my own son several years ago. My son used it so much, I was afraid he'd burn the motor out of it, but he never did! I only wish I'd kept it to give to my grandson, otherwise I wouldn't have had to buy a new one! The set includes everything you need to do your first batch of stones: an electrically operated tumbler, barrel, grit and polish, rough semi-precious stones, a jewelry kit, and instructions. Unlike many of todays toys which give children instant gratification, polishing rocks is a good lesson in patience as it takes several weeks to see the result. After using the tumbler himself, my grandson reported that it was his favorite present as he enjoyed the anticipation and suspense building up to opening the tumbler. He never knew what magical surprise awaited him. Even though it's been a few years since I gave my grandson the tumbler, he still collects rocks and transforms them into treasures that he often makes into gifts for others, such as necklaces and key chains. I definitely got my money's worth with this purchase. If you have a rock lover or jewelry maker at your home, you can't go wrong with NSI's Rock Tumbler as a gift!
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213 of 217 people found the following review helpful By Dr. Rogue on January 2, 2005
This is a great little tumbler to polish rocks. If you have no idea about rocks or how this machine works you need to do a little research. This is not the type of item to just buy and expect to polish rocks in a weekends time without even having to read the directions. The tumbler is also recommended for children ten years or older.

To polish rocks properly it will take a solid month of tumbling and is a three step process. This means the tumbler will be running for the entire month. The first step takes about a week, the second about two weeks, with the final step about one week. Between the steps all you have to do is clean out the barrel and the rocks and put back in with new water and the next level of grit/polish. Besides occasionally making sure the tumbler was sealed properly and is in no danger of walking itself off the table it requires no other attention. The tumbler does make some noise tumbling but not a ridicules amount. You obviously can't place it in your bedroom or living room and expect it not to be heard. Placement in a basement or garage is ideal. The power draw is minimal as it only uses .15 amps and 10 watts. Therefore, if you pay 10 cents a kWh, then the amount it will run up your electric bill for a month of constant running is 73 cents.

The instructions that come with the tumbler are also pretty good, but they do need followed. The tumbler is durable but you need to lube two points as indicated in the manual or you will put excess stress on the motor and you will burn it out. The drum seals quite well and easily if you follow the instructions on sealing which requires you to make sure the "O" ring is properly seated and you put a light coating of oil on the rim of the barrel to complete the seal.
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159 of 163 people found the following review helpful By A Customer on February 11, 2000
This product is noisy, but we put ours in a cooler and that insulates the sound almost totally!
I had a problem with the drum leaking so I used vaseline to seal it and it works great too!
We are on day 21 of the 30+ days required.
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279 of 292 people found the following review helpful By A Customer on October 26, 2000
We bought this for our 8-year-old son as a project. We knew ahead of time that it would take at least 3 weeks. (It should state this on the box though.) Rocks are hard! Nature can take thousands of years to do what this does in weeks! However, it is quite noisy and can leak a little. Put it in a garage or follow the suggestion of the other reviewer about a cooler. Vaseline does stop the leaks. Your patience with this will definitely pay off! The rocks were beautiful! There were quite a few big ones, plenty of medium size and lots of small ones. My son, the budding scientist that he is, was absolutely thrilled! I was so impressed and fasinated by each rock! I could not wait to do another batch! A great long-term project that teaches not only about nature, but about how rewarding a little patience can be. I highly recommend this to all people, (adults as well) who are interested in rocks and crystals.
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143 of 154 people found the following review helpful By "nic9575" on February 1, 2002
Christmas morning we opened presents and that afternoon we started our first set of rocks to polish. Our whole family has injoyed the amazing transformation of the rocks as we complete each step. My 10 year old loves to collect rocks and wanted this toy more than anything, and my 5 year old has fallen in love with the beautiful gems. They come out smooth and shiny like the ones you see for sale... We have transformed a little over a pound of rocks since we started and the Tumbler is still working like new. As a Mother I am impressed with how much interest my children have taken in erosion. My 10 year old has been reading books on the forces of nature in its natural state and the changeing of lanscapes, and as we clean the rocks and prepare for the next step in the Tumbleing process He has been eager to tell my 5 year old about the entire process and how it takes millions of years for a rock to get like this naturally and we are doing it in less then one month. I am considering getting another one for my younger child to have to polish her own collection of rocks. If you are considering getting this toy I am sure your family will be as satisfied as mine is.
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