Sunday, 19 of February of 2017

Smithsonian Rock Tumbler


Smithsonian 49005 Rock Tumbler Kit barely used
Smithsonian 49005 Rock Tumbler Kit barely used $14.99
Time Remaining: 2d 3h 41m
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Smithsonian Rock Tumbler with Bonus Refill
Smithsonian Rock Tumbler with Bonus Refill $65.99
Time Remaining: 2d 20h 3m
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New Smithsonian Rock Tumbler Kit STEM Free Shipping
New Smithsonian Rock Tumbler Kit STEM Free Shipping $77.95
Time Remaining: 2d 21h 49m
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NSI Smithsonian Rock Tumbler 49005
NSI Smithsonian Rock Tumbler 49005 $15.00
Time Remaining: 3d 19h 23m
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NEW IN BOX Smithsonian Rock Tumbler 26354 with supplies
NEW IN BOX Smithsonian Rock Tumbler 26354 with supplies $26.99
Time Remaining: 4d 4h 6m
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Smithsonian Rock Tumbler with Refill
Smithsonian Rock Tumbler with Refill $75.03
Time Remaining: 4d 6h 12m
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Smithsonian Rock Tumbler
Smithsonian Rock Tumbler $51.34
Time Remaining: 6d 16h 56m
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Smithsonian Rock Tumbler Classic With Bonus Refill
Smithsonian Rock Tumbler Classic With Bonus Refill $64.49
Time Remaining: 9d 17h 25m
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NSI Smithsonian Rock Tumbler
NSI Smithsonian Rock Tumbler $54.39
Time Remaining: 12d 15m
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Natural Science Industries Smithsonian Rock Tumbler
Natural Science Industries Smithsonian Rock Tumbler $58.94
Time Remaining: 13d 14h 18m
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Smithsonian Rock Tumbler
Smithsonian Rock Tumbler $56.19
Time Remaining: 13d 16h 55m
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Smithsonian Rock Tumbler NEW OPEN BOX
Smithsonian Rock Tumbler NEW OPEN BOX $40.50
Time Remaining: 13d 18h 44m
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Nsi Smithsonian 49005 Rock Tumbler 042409490051
Nsi Smithsonian 49005 Rock Tumbler 042409490051 $63.25
Time Remaining: 18d 10h 30m
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Rock Tumbler Polisher gemstones craft jewelry agate jasper smithsonian education
rock tumbler polisher gemstones craft jewelry agate jasper smithsonian education $28.00
Time Remaining: 20d 23h 44m
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How can I use my Smithsonian rock tumbler?

I have one from Smithsonian that I bought my son for Christmas and I lost the directions.

This is a small barrel tumbler that comes with Tumbling Grit. To make it work, you should fill the barrel with about 1/4 inch of water, about 2/3 full of rocks and then grit. You want a mix of water and grit that doesn't just wash off of the stones when the barrel turns, so you want it to be a slurry consistency like a paste almost. The idea is to have the grit stick to the rocks.

Ideally, you want to polish your rocks in steps, using progressively finer grit each time, and finally a polishing compound. You start with coarse grit, a second finer grit, a third grit, and a polishing step. Each step may take as long as a week of tumbling.

Sand is a very poor tumbling grit, and will take much more tumbling time to produce the same result, plus you cannot use sand for any rock that is not softer than quartz, and many attractive Tumbled Rocks are some variety of quartz.

For more information about Rock Tumbling visit rock tumbling instructions

Live Auctions from eBay for Smithsonian Stone Tumblers



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