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Knife Grinder

Built by John Gay in September 2015

This model came from the September 1955 Meccano Magazine.It was described as an easy model to build for juniors and could be built from outfit No. 2. I wanted to see some sparks to give added realism so tried sandpaper on the wheel but that didn't work! I was then inspired by seeing the sparks produced by a train pantograph as it went over some points, and found that putting 16 volts through the model produced the desired effect.


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Knife Grinder
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