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

Diamond cup wheels: www.ebay.com/sch/m.html?item=153592065765&_ssn=jonathancmu&_osacat=0&hash=item23c2cceee5%3Ag%3A99wAAOSwMUtdSHvV&_odkw=beast&_from=R40&_trksid=p2046732.m570.l1313&_nkw=beast+cup&_sacat=0

Silicon carbide wheel: www.amazon.com/gp/product/B0015YJB0K/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&psc=1

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

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– 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 rough rock, tumblers, grit, jewelry supplies etc. at good prices. I buy most of my coarse grit from here in 45 lb. bags. It's the best price I have found. If you buy using the following link, I make a small commission.
http://bit.ly/3MerxdI

This is the cabbing machine I use:
https://kingsleynorth.com/kingsley-north-cabber-6-nova.html?ref=robertabram1&utm_source=tapfiliate

– THE ROCK SHED –
I buy a lot of lapidary supplies 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

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Видео Polishing a Big Chunk of Minnesota Jasper канала Michigan Rocks