Polishing a Big Chunk of Minnesota Jasper

Thomas, a Minnesota Rockhound and YouTuber sent me a big piece of jasper to polish. Thomas’s channel can be found at https://www.youtube.com/channel/UC2_1JiKIpOiumzeZAz78c7w/featured

Here are the steps I took to polish this:

I started with my normal, dry angle grinder with a diamond cup wheel. The cup wheel is 50/60 grit. I followed this up with a 16 grit silicon carbide wheel.

Next I moved to a Makita electronic stone polisher. This has a soft backer, so the pads can flex to the shape of the rock. The grits are as follows:
30 grit
50 grit
100 grit
200 grit
400 grit
800 grit
1500 grit
3000 grit
6000 grit
8000 grit



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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