The Sawstop system induces an electrical signal onto the blade and then monitors that signal for changes. The human body has a relatively large inherent electrical capacitance and conductivity- if the system detects this, the blade drops out in 5 miliseconds! Check out the video when the saw comes in contact with a hotdog.
Hi tech table saw will never saw your finger off
Permalink
If you need a device such as this you shouldn’t be using a device such as this
Permalink
This is insane! I thought I saw this on TV late night a couple of years ago, but thought I could have been dreaming! Wow, guess not!