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NATIONAL GEOGRAPHIC Rock Tumbler Kit - 1.36 kg Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Includes Rocks for Tumbling & Rock Polisher Grit, Rock Tumbler Machine for Adults & Kids

NATIONAL GEOGRAPHIC Rock Tumbler Kit - 1.36 kg Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Includes Rocks for Tumbling & Rock Polisher Grit, Rock Tumbler Machine for Adults & Kids

Q: How much power does this tumbler use per hour? Ive looked through the information but cant find the Kw anywhere listed

I can speak for the UK but in the US the cost to run one of our tumblers for say a 24-hour period would cost less than $.36-90 cents a week max depending on their per kWh rates. These take .3 Amps, so (watts = amps x volts) OR watts = .3 x 110 which equals 33 watts. Now for one week would equal 33 watts x 7 days x 24 hours = 5544 watts or 5.54 kilowatts for one week. At $.16 per kilowatt it comes to $.89 per week.

Q: Is this mains powered as it says batteries required in comparison with others

Yes it’s powered from the mains. My son is delighted with ours.

Q: Will it work with 220v eu electricity?

Yes we use it in the UK with a 220v 50Hz power supply which is universal in Europe.

Q: what are the dimensions of just the barrel please

Our National Geographic 3 pound barrel is 6 1/2" X 3 3/4"

Product ID: 381792985

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Details

Size
Large
Brand
Blue Marble
Theme
Earth Science
Age range (description)
8 years and up
Item dimensions L x W x H
32.4 x 26.2 x

🪨1.36 kg extra-large barrel capacity

⏲️9-day programmable timer for hands-free tumbling

⚙️3-speed motor for precision control

Description

💎 Turn rough stones into polished treasures — your personal gem lab awaits!

STEM APPROVED FUN - Boosts critical thinking and hand-eye coordination for ages 8+, blending education with excitement.
WHISPER QUIET DURABILITY - Stainless steel barrel with leak-proof lid runs 75% quieter than plastic models.
ALL INCLUSIVE TUMBLING KIT - Includes 9 gemstone varieties, polishing grit, strainer, and jewelry fastenings.
INNOVATIVE GEM FOAM POLISHER - Reusable GemFoam delivers a brilliant, showroom-quality shine every time.
EFFORTLESS GEMSTONE CREATION - Transform rough rocks into dazzling polished gems with ease.

The NATIONAL GEOGRAPHIC Rock Tumbler Kit features a robust 3-speed motor and a 1.36 kg stainless steel barrel with a leak-proof lid, designed for quiet, efficient tumbling. With a 9-day timer, it offers hands-free operation. This all-in-one kit includes nine types of rough gemstones, polishing grit, a strainer, jewelry fastenings, and the innovative reusable GemFoam polisher for a brilliant finish. Ideal for STEM learning and creative hobbyists aged 8 and up.

Specifications

Product Dimensions	32.4 x 26.2 x 17 cm; 3.7 kg
Manufacturer recommended age	8 years and up
Item model number	NGTUMBLER3LB
Educational Objective(s)	STEM, Concept Development Skills, Hand-Eye Coordination, Critical Thinking, Reasoning Exploratory Skills
Language:	English
Assembly Required	No
Batteries Required?	Yes
Batteries included?	No
Material Type(s)	Stainless Steel
Remote Control Included?	No
Colour	Multicolor
ASIN	B08DL95CWL

Have a Question? See What Others Asked

How much power does this tumbler use per hour? Ive looked through the information but cant find the Kw anywhere listed

Is this mains powered as it says batteries required in comparison with others

Will it work with 220v eu electricity?

what are the dimensions of just the barrel please

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