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Step 4Modify the Large Gear so it Fits on the Shaft
It is imperative that the large pinwheel gear spin freely and precisely. I had to drill a hole in the VCR play head gear I selected so that it would fit over the shaft of the pinwheel. After testing the gear, it was wobbling back and forth as it was spinning. In order to remedy this, I extracted another plastic cylindrical part from the VCR which fit firmly inside of the play head gear and on the shaft of the pinwheel. This reduced the wobbling of the large gear immensely. After I was certain that the addition of the new piece was a good idea, I reinforced it with epoxy.
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