What is the power consumption of this unit over a week of continuous use? (in usa on 110v). thank you.

This takes .3 Amps, so (watts = amps x volts) OR watts = .3 x 110 which equals33 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.

What the difference between this and the starter kit?

There are two main differences:The Hobby Rock Tumbler has a rubber tumbling barrel with a stainless steel cap, which reduces noise and is more durable. The Starter Kit Rock Tumbler has a plastic barrel. The Hobby Rock Tumbler also has a keypad for setting the number of days you would like it to tumble, where as the Starter Kit Rock Tumbler's setting options are on/off. Thank you for your inquiry.

What pound tumbler is this product?

Dearest National Geographic.... why would you only send 1# of rocks with a two pound tumbler?

Can i buy extra grit without the rocks. we have many rocks from "mining" gemstones that i would love to polish. what do you recommend?

I recommend you follow the rock tumbler hobbiest MIchigan Rocks on Youtube. He's a good wealth of information for anyone getting into rock tumblers. He and other's mention that the polish from National Geographic is not good. I would go with rock tumbler polish offered by Polly Plastics.

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National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

Product ID: 34238823

🔇75% quieter leakproof barrel

⏲️One-touch timer with auto shutoff

⚙️Durable motor, built to last

€ 132.84

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Polish your passion, rock your STEM game!

AWARD WINNING EDUCATIONAL FUN - From the Toy Association’s Toy of the Year winner, designed to spark creativity and scientific curiosity.
COMPLETE STEM KIT FOR ALL AGES - Includes 9 types of real rough gemstones, 4 polishing grits, sifter, and a full-color learning guide.
SET IT AND FORGET IT CONVENIENCE - One-touch timer and automatic shutoff let you control tumbling cycles without constant supervision.
WHISPER QUIET TUMBLING EXPERIENCE - Enjoy a 75% noise reduction thanks to the leakproof rubber barrel—perfect for home or classroom.
TRANSFORM ROUGH ROCKS INTO DAZZLING GEMS - Effortlessly polish everyday stones into museum-quality gemstones with simple, fun operation.

The National Geographic Rock Tumbler Kit – Hobby Edition is a premium STEM science kit designed for kids and adults to transform rough stones into polished gemstones. Featuring a durable, whisper-quiet motor and a leakproof barrel, it offers a hassle-free tumbling experience with one-touch timer controls. The kit includes nine types of rough gemstones, four polishing grits, a sifter, and an educational guide, making it an award-winning tool for creativity, learning, and hands-on geology exploration.

Specifications

ASIN	B01LQCIL88
Age Range Description	8 years and up
Best Sellers Rank	#1,945 in Toys & Games ( See Top 100 in Toys & Games ) #1 in Kids' Rock Tumblers
Brand Name	Blue Marble
Customer Reviews	4.5 4.5 out of 5 stars (25,855)
Educational Objective	STEM
Global Trade Identification Number	00816448020421
Included Components	AC Power Adapter, Jewelry Fastenings, Learning Guide, Rock Tumbler, Rough Gemstones (1/2 lb), Strainer, Tumbling Grit (4 grades)
Is Assembly Required	No
Item Dimensions	13.81 x 4.88 x 8.06 inches
Item Type Name	Rock Tumbler Kit – Hobby Edition
Item Weight	5.1 Pounds
Manufacturer	JMW Sales, Inc
Manufacturer Maximum Age (MONTHS)	1188
Manufacturer Minimum Age (MONTHS)	96
Manufacturer Part Number	NGHOBBYTUMBLER
Manufacturer Warranty Description	No Warranty
Material Type	Plastic
Model Number	NGHOBBYTUMBLER
Set Name	Hobby
Size	One Size
Sub Brand	National Geographic
Theme	Rock Tumbling
UPC	816448020421
Unit Count	1.0 Count

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€ 132.84

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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