Tumbling Lake Superior Rocks from Last Summer

Last summer, I went to Lake Superior and found a few rocks. In this video, I tumble those rocks.

Here’s the recipe I used to tumble these. It’s the same one I use for just about everything.

Rotary tumble using coarse grit, such as 46/70 silicon carbide. Check rocks weekly and set aside any that are acceptable. There is no set time for this. Each rock runs as long as necessary.
Lot-O Tumbler:
2 days with 2 Tablespoons 220 or 120/200 silicon carbide grit
3 days with 1/2 teaspoon 500 aluminum oxide grit and 1 tablespoon borax
2 days with 1/2 teaspoon aluminum oxide polish and 1 tablespoon borax
Optional: burnish for 2 hours or more in 2 tablespoons of borax

Videos showing where I picked these rocks up:
Grand Marais: https://youtu.be/sJid0SyHXMs
Perry’s Landing and Two Hearted River: https://youtu.be/yIp4BWau030
Vermillion Point: https://youtu.be/WSYcLOfekm4

How to Make Stone Crosses: https://youtu.be/dJ7qriOF0r4
Making Petoskey Stone Turtles: https://youtu.be/DIOBskqTRDc



I buy most of my lapidary supplies from The Rock Shed. I don’t make money from your purchases there, but I really think they have the best prices and the best service, so I feel good recommending them. https://rockshed.com

I also have an Amazon storefront. This is where you can find other products you may have seen in my videos. As an Amazon Associate I earn from qualifying purchases. It doesn’t cost you extra. https://www.amazon.com/shop/michiganrocks

On Michigan Rocks you can join me on relaxing rock hunts in picturesque Michigan. I’ll also show you how to polish rocks and teach you other lapidary techniques. New videos are posted every Tuesday and Friday. Subscribe now so you don’t miss any upcoming videos!

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