SawStop’s 10” cabinet saw was developed from the ground up with a particular focus on safety and quality. It features a revolutionary safety system that stops and retracts the blade (within 5 milliseconds) upon accidental contact, drastically reducing the severity of user injury. The safety system provides invisible protection (doesn’t interfere with your work), is always “on” and performs continuous self tests.

http://sawstop.com/

I would have liked to see a real finger tested instead of a hotdog.

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