Building a stone polisher

May 19, 2005 50 Replies

That's most interesting. I would like to learn a bit more about that process...

i

using one of these

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regards, charlie
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Thanks, very interesting stuff.

i

As an aside, we recently went camping about 25 miles NNW of Tonopah, Nevada. We found an old mining operation where obsidian balls (called Apache tears after polishing) were being taken out of a mountainside. There were bazillions of them.

I often wondered how a large operation like that would process them. Or, if they used them for something else besides tumbled stones for jewelry.

Any hints?

Steve

I am seriously considering making a stone polisher out of a used tire, some shaft, a 3/4 HP gear motor, and chains and sprockets. I just talked to my friend to whom I gave the gearmotor 3 years ago, he said that it lies unused, and he could give it to me.

i

Just found some nice Torrington 1 1/8" ID needle bearings. If I can buy a pipe slightly below this diameter, I can put it in these bearings, put flanges on both sides, add a big sprocket to one side, the tire (properly mounted) to another, with the 3/4 HP 60 RPM gearmotor that my friend is giving to me, I will be in business!

I will try to stop by some tire changing place tomorrow to ask for a used tire.

i

It took me a while to work out the motor speed as I

That's ingenious!

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