Lapidary sphere machine
Using my, lapidary, spheremachine to turn a jasper rock into a polished sphere. This machine was, homemade with common hardware items obtained from, Lowes and, HomeDepot. It uses 1, 4 x 3 steel plate and regular door hinges to hold the motors. The motors are surplus gear motor and turn at 80 RPM. A fan was attached to the end to cool it. The cups are common iron pipe reducers. This is just a quick video of the course grind at 80 grit. It uses PVC couplers for the remaining grits.
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