SawStop: prevent table saw from cutting your fingers off

21 12 2010
http://www.youtube.com/v/OMD3agP5hv0&hl=en&fs=1

It is a WOW invention, that I can say. The blade detects electrical signal conducted through human body from the saw table if the finger touches the blade. The amazing part is the reaction speed of the blade stopping design, using its rotational power to stop and retract the blade in hundreds of a second.

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