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Physics, 01.08.2019 01:30 gobbler80

The modern jigsaw (a straight saw blade that rapidly moves up and down as the operator guides it along an intended cutting path) was created by a sewing machine repairman who modeled the action of the blade after the up-and-down action of a sewing machine needle. this is an example of

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The modern jigsaw (a straight saw blade that rapidly moves up and down as the operator guides it alo...
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