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Rock Tumbling: mahogany obsidian in lortone and lot-o from start to finish polish
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How to Tumble Obsidian
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Rock Tumbling: Bahia agates from medium to polish in the Lot-o tumbler.
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Tumbling Obsidian - Full Tutorial
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Great Polish on Yard Rocks?... Yes You Can!!!
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Making a Fully Functional Jet Engine from Soda can | diy Jet Engine | homemade Jet Engine
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Transforming A Stainless Steel Bolt Into A Fully Functioning Miniature Lathe Chuck
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