Polishing a Large Puddingstone
Learn how I polish large puddingstones.
Here are the steps I took to polish this.
I started with my normal, dry angle grinder. The cup wheel is 50/60 grit, but is way more aggressive than the soft 30 grit wheel I followed it with. The angle grinder also spins much faster than the wet stone polisher. I spent 17 minutes shaping the rock and removing holes in it.
Next I moved to the wet stone polisher. This has a soft backer, so the pads can flex to the shape of the rock. The grits and times are as follows:
30 grit - 40 min.
50 grit - 11 min.
100 grit - 11 min.
200 grit - 11 min.
400 grit - 8 min.
800 grit - 11 min.
1500 grit - 10 min.
3000 grit - 8 min.
At the end, I used a cloth polishing wheel with aluminum oxide polish. I think I'll skip this step in the future. I don't think it made much, if any, difference.
On the Michigan Rocks channel, 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 come out every Tuesday and Friday. Subscribe now so you don't miss any upcoming videos.
SUBSCRIBE by clicking this link: http://www.youtube.com/c/MichiganRocks?sub_confirmation=1
Видео Polishing a Large Puddingstone канала Michigan Rocks
Here are the steps I took to polish this.
I started with my normal, dry angle grinder. The cup wheel is 50/60 grit, but is way more aggressive than the soft 30 grit wheel I followed it with. The angle grinder also spins much faster than the wet stone polisher. I spent 17 minutes shaping the rock and removing holes in it.
Next I moved to the wet stone polisher. This has a soft backer, so the pads can flex to the shape of the rock. The grits and times are as follows:
30 grit - 40 min.
50 grit - 11 min.
100 grit - 11 min.
200 grit - 11 min.
400 grit - 8 min.
800 grit - 11 min.
1500 grit - 10 min.
3000 grit - 8 min.
At the end, I used a cloth polishing wheel with aluminum oxide polish. I think I'll skip this step in the future. I don't think it made much, if any, difference.
On the Michigan Rocks channel, 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 come out every Tuesday and Friday. Subscribe now so you don't miss any upcoming videos.
SUBSCRIBE by clicking this link: http://www.youtube.com/c/MichiganRocks?sub_confirmation=1
Видео Polishing a Large Puddingstone канала Michigan Rocks
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