How to Tumble Petoskey Stones

Have you ever heard that it's impossible to tumble Petoskey stones? It's not! I'll show you how to tumble them from beginning to end. I'll use dry corn cob media to get the final polish. If you don't have a tumbler and would like to learn to polish Petoskey stones by hand, take a look at this video:    • How to Hand Polish a Petoskey Stone   Here are the steps I used: 1) Three or four days at a time in a three pound rotary tumbler with 1/2 tablespoon of 80 grit until rocks are free of holes. Use more water than normal. 2) 24 hours in a rotary tumbler with 1/2 tablespoon of 220 silicon carbide grit. 3) Two days in a vibratory tumbler with dry corn cob media and one tablespoon of 500 aluminum oxide grit. 4) Two days in a vibratory tumbler with dry corn cob media and one tablespoon of aluminum oxide polish. – MERCH – Buy Michigan Rocks shirts and other merchandise here. https://michigan-rocks.myspreadshop.com – HIGHLAND PARK LAPIDARY – Highland Park makes some high quality tools at reasonable prices. I have two of their tumblers. They're the most rugged tumblers I have seen. They also make a wide range of other lapidary tools, including saws, sphere machines, cabbers, etc. They also have the best price on grit that I have found. I make a commission if you buy something through this link. I doesn't cost you extra. https://hplapidary.com/?ref=ROBERTABRAM – KINGSLEY NORTH – Kingsley North is a lapidary store in Michigan's U.P. They make a great cab machine and sell many other brands too. They have a huge selection of rough rock, tumblers, grit, jewelry supplies etc. at good prices. If you buy using the following link, I make a small commission. https://fas.st/t/u7uaxb5V This is the cabbing machine I use: https://fas.st/t/vCjRymKC – THE ROCK SHED – I buy a lot of lapidary supplies and rough rock from The Rock Shed. I don't make money from your purchases there, but they have good prices and good service. This is where I buy my finer grits and polish. http://rockshed.com – AMAZON STOREFRONT – I also have an Amazon storefront. This is where you can find other products you may have seen in my videos. As an Amazon Influencer, I earn from qualifying purchases. It doesn't cost you extra. http://www.amazon.com/shop/michiganrocks – SUBSCRIBE – 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 Friday and some Tuesdays. Subscribe now so you don't miss any upcoming videos! http://www.youtube.com/c/MichiganRock... – FACEBOOK –   / michiganrocksrob