2015/08 © Hideo Nakano nh1886@yahoo.co.jp BOTTLE RUNNER
Introduction Before the manufacturing of PET plastic bottles began, we had been using string spools to make rubber band spool runners. We cut candles transversely to make a washer to reduce friction between the spool and a winding handle. There are so many designs of the rubber band powered runners. This instruction shows a bottle runner sample using two same shape plastic bottles.
Materials and tools
1. How to make the bottle runner
2. How to make the bottle runner run straight
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