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Swimming Pool Pump Motors Make Excellent Polishers
Mark Yax, Solon, Ohio: It took too much time to replace the grinding wheels on my bench grinder with buffing or de-burring wheels, especially to remove the guards. Instead, Ive found that old swimming pool pump motors can make excellent polishers and eliminate the need to replace anything. These motors are usually 3/4 hp and operate at 3,450 rpms. Removing the motors impeller leaves a 1/2-in. standard shaft with a threaded end, which can be used with a nut and some washers to secure the de-burring wheel or buffing wheel.
  I mounted my pump motor on a steel plate that clamps onto my workbench when needed. When you use a swimming pool pump motor this way Id recommend always wearing safety glasses or a face shield because this setup has no guards. And never use a grinding wheel this way unless you make up some kind of guard that covers about 3/4 of the wheel, like you see on bench grinders. The wheel could explode and send chunks flying in all directions.

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2016 - Volume #40, Issue #1