"Dr. Deb" wrote in message
...

having just had a run in with the object of this thread. Even if I had
had
one, I don't think it would have kept me from getting 12 (should have been
more) stitches in two fingers (4 index, 8 ring). I was cutting slats for
a
swing fron a very wet treated 2x8. It was wanting to vear away from the
fence, so, being very careful, I was holding it over with my left hand and
pushing it through with the right hand. The 2x8 just stopped and my left
hand slipped up and over the blade.

Because the 2x8 was as wet as it was, I would think the Saw-Stop would
have
already fired. Even if it did not, going over the top of the blade that
way
would make it much harder for the trigger mechanism to detect the change
in
resistance.

Makes a nice commercial and is something to keep the "safety" folks happy.
Other than that, I cannot think of a good use for it except to generate
funds for the company that makes it.

Deb

As I understand it, the blade works on electrical signal and not resistance.

Per the website ad: "When skin contacts the blade, the signal changes
because the human body is conductive." "The change to the signal activates
the safety system."

If I recall, a show on cable called "Time Warp" captures action with a super
slo-mo camera. They did a segment about the SawStop and used a real hand.
The guy dipped his hand in ice water prior to the test, which I imagined was
to slow blood flow, and cut wood allowing his hand to hit the blade and it
worked. I can't find any videos right now, but searches may find results.