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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💎 Turn Rough Rocks into Coveted Gems—Because Your Desk Deserves a Little Bling!

NEXT LEVEL SHINE - Innovative reusable GemFoam polishing foam delivers a professional-grade sparkle that turns heads.
STEM MEETS STYLE - Educational geology and creative thinking kit that’s perfect for curious minds and trendsetters alike.
LEAK PROOF LUXURY - Stainless steel lid and improved barrel design ensure zero mess, zero stress—just pure tumbling fun.
ALL IN ONE GEM LAB - Includes 1 lb of rough rocks with 9 gemstone varieties, tumbler grit, strainer, jewelry fastenings, and exclusive GemFoam polish.
SET IT FORGET IT - Durable motor with customizable time and speed settings lets you multitask while your gems get perfected.

The Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit is a complete, durable rock tumbling system featuring adjustable time and speed controls, a leak-proof stainless steel barrel, and an exclusive GemFoam polishing foam. This all-in-one STEM kit includes one pound of rough rocks with nine gemstone types, tumbler grit, a strainer, and jewelry fastenings, making it perfect for both educational and creative pursuits.

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€ 220.87

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Netherlandsstore

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Product Dimensions	33.3 x 12.7 x 20.7 cm; 1.9 kg
Manufacturer recommended age	12 months - 3 years
Item model number	NGHOBBYTUMBLER2
Educational Objective(s)	Geology and Creative Thinking
Language:	English
Number of Game Players	1
Assembly Required	No
Batteries Required?	Yes
Batteries Included?	No
tech_spec_battery_description_toys	Not required (mains powered)
Material Type(s)	Cotton
Remote Control Included?	No
Color	multi
Release date	5 July 2023
Language	English
ASIN	B086Z6ZB7R

Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Complete Rock Tumbler Kit with Durable Tumbler, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Educational Stem Science Kit

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