Springs that slam a hunk of Al into a spinning blade, spanning an inch or
less of space.
Or springs that need to retract the blade up to 3" into the saw.
Good question for their engineers.
I am guessing here but if the blade drops it is likely the tension on the
belts will lessen also. If the motor is effectively disengaged from the
blade via the loose belts the blade momentum would not have the motor
momentum added to the force that has to be stopped by the cartridge.
I would think that the blade would stop before the saw drops. However, the
act of dropping could be a problem in itself. Suppose you slip and your hand
goes onto the blade. Thank god the saw blade witll stop spinning (perhaps),
but then the blade starts to drop and pulls down. Trapping your little pinky
between the tooth of the frozen blade. Suddenly you regret that you made
that nifty zero clearance plate....
In that event even if the saw is off and the blade not turning at all you
are going to get cut. The stationary blade is not going to pull you in as
it drops, it is simply going to cut, not snag and pull.
My saw blades seem to have a hook to them. I can certainly imagine that a
finger caught under one of those hooks might see some shearing action as the
blade drops below the zero clearance insert. Remember, the blade is
immobilized so it isn't going to spin backwards to release the finger.
Of course this is just speculation. So neither one of us really knows what
I saw a Sawstop demo in person 2 yrs ago. From what I remember the rep
saying.... the blade is stopped within 2 or 3 teeth on a blade.
Stopping the blade so fast takes a lot of energy and dropping the blade
helps absorb some of the energy.
I got an e-mail from sawstop saying my cabinet saw is ready to be
shipped to me. I put my name on the mailing list 2 yrs ago at IWF. So
it looks as though there are actually starting production.
cost of cartridge was about $80 and replacing it was a DIY project of
very short duration. (they could do it in a few minutes - they did a
demo every hour on the same saw). Sawblades were said to not be
destroyed - maybe loose a couple of carbide teeth. If it were to
happen with my WWII, then I would hang it on the wall as a reminder and
gladly shell out for a new one. (now if it was a misfire, then it
would be a different story)
Since my day job invloves keeping people asleep while the hand surgeons
try to sew fingers back on, I can easily justify this device for my
shop. About once a week I see someone cut off fingers. (My worst week
ever I personally took care of 8 severe hand injuries in 5 days) If
you think a couple hundred dollars is too much for this product, and
that $80 for a cartridge is out of line, then you would really be
shocked at the hospital bill if you ever have the misfortune to have a
bad accident and you and your fingers go to the hospital in different
vehicles. My insurance.... $150 for the ambulance ride, $150 ER
copay, surgery would be free, $40 copay for each specialist, each visit
(think of a couple of months of physical therapy @ $40 a pop), $25 for
each prescription; then add in a pain factor, loss of wages, loss of
use, and the 20% copay that I almost forgot about for several days in
the hospital. Sawstop is pretty cheap insurance after all (IMHO -
and if/when I do get a SS, I'll still be super careful around it - as I
am now with all of my shop tools.
BTW... I keep a picture of a mangled hand right next to the on/off
switch on the TS just as a reminder. (posted to APW or APBW a few
Certainly $200 for a new cartridge and blade is EXTREMELY cheap insurance to
guard against a "serious" injury. You or your employeer pay way more than
that monthly for health insurance.
Exactly. And the scary part is that the people that believe that proper use
of your brain is going to prevent these kind of accidents are the ones that
probably need the Saw Stop the most. There are countless ways to be
seriousely injured with a TS while "not" cutting wood and IMHO that is when
your mental guard will be less effective.
I doubt that there's ever going to be a retrofit kit available. If that was
doable at reasonable cost and effort I'm sure the Sawstop people would have
gone that route rather than trying to break into an established market with
a new line of saws.
Reply to jclarke at ae tee tee global dot net
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