[Wetzel]

I bet most people here will agree that rapidly cooling the motors will shorten the life span of the motors.
However, the typical use period is still far shorter then the design life of the motor. My dad has a 20 year old drill thats seen alot of use, and still runs fine.

Point being, yes, it is bad for the motor but it won't matter in the time it is needed to work.


Wetzel
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Design to meet criteria, don't worry a whole lot beyond that.