On 12/4/2012 1:36 PM, DerbyDad03 wrote:
On Dec 4, 9:38 am, Leonlcb11211@swbelldotnet wrote:
....

The only people complaining about the perceived SawStop problems are
those that are uneducated on the product.

That's what I thought and that's why I asked.

However, something you said needs some clarification, at least to me.

You said: "That said if you are having false trips it may very well
be likely that you are doing something wrong and probably the perfect
candidate for a SawStop, you are probably going to benefit from it."

What could a user be doing that would cause "false trips"? If there
are no documented false trip issues, then wouldn't any trips caused by
someone doing something wrong actually be *real*?

Theoretically, one could get close enough to the blade to trigger it w/o
actually touching it. That scenario is mentioned in the patent
background since the detection circuit is capacitively coupled there
doesn't have to be actual contact if the disturbance of the capacitance
field is sufficient the actuator logic will think "something's bad" and
trigger.

At least initially there was a manual override switch that one could use
to disable the detection circuitry and I presume there still is altho I
haven't searched the current sales lit thoroughly. It was (is) there
for the express purpose of preventing a false positive trip if the saw
were being used for, say, wet PT lumber or some other product that had a
high-enough capacitance to cause actuation. If the operator thinks it
isn't needed for a given cut or forgets to flip the switch, that's a
second category (albeit one could claim that one is operator error only,
not a false positive, still, the effect is the same).

Similar to that is the possibility of an embedded metallic object (a
nail, iow) that happens to also be in contact w/ the table at the time
it's hit by the blade--that will almost certainly trigger it even though
SS says just a nail if not grounded likely won't be large enough to.

There is always then the chance failure--stuff happens; no technology is
perfect. Undoubtedly small, but still has to be finite and positive.

I notice now that SS has a submittal form for "saves" that says if you
ship them the cartridge/blade and they can determine it actually was
flesh that caused the trip they'll provide a replacement cartridge.
That doesn't cover the cost of either repairing an expensive blade or
replacing one, but it is something. Of course, in that case the avoided
cost of the medical bills likely otherwise probably overshadow the
repair costs significantly.

There is no information at all on the SS site on actual statistics of
any value to do any estimation at all of either type of
actuation--needed or false. There _is_ a (to me) blatant use of the
scare stories and a big countdown clock of "time to next saw accident"
that's just tacky, but then that's me...

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