3 Item(s)
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Because of gear ratio, one plastic gear is moving so rapidly it melts when any exuberant student tries to brighten his mind. It works well if the instructor does the generation but I would not buy it for student use. Change the gear and it would be a good student buy.
(Posted on 4/13/12)
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The intermediate gear stripped the small pinon teeth the second time it was used. Purchasing one of these is total waste of money.
(Posted on 2/17/10)
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Never seen anything like it before. I mean it's so amaizing.
(Posted on 3/13/08)
3 Item(s)