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Rahul, by using a hace salw blade, was ...

Rahul, by using a hace salw blade, was cutting metal pipes to supply water to house. What will happen if he starts moving the hack saw blade very fast over the metal, due to lack of time

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If we move the hack saw blade very fast over the work piece, due to friction, the blade gets heated up and it will demate the shapnees of teethc, So, the efficiency of the blade will be reduced, and when we move it very fast over the cutting metal, there is a chance of breaking the hack saw balde.
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