I thinking that if those reps are actually still around these days that they
would have a different view on which course they should have taken. That is
my throught. And I would also think that if those manufacturers were like
most that I have worked for that someone submitting a proposal for an
accessory or improvement of their product is not an uncommon occourance.
Basically I could not really see a manufacturer having ill feelings towards
an inventor or other company that is making a proposal. All the major
manufavturers depend on smaller businesses to bring new ideas and products
to the table for possible future consideration. Many get turned down some
Easy enough to calculate. Assume rotational speed of 3600 rpm = 60 revolutions
per second. 114 ms * 60 revolutions = 6.84 complete revolutions of the blade.
If it's a 40-tooth blade, that means 274 teeth. That's a lot of cutting.
That's a lot of ouch, and a lot of damage, if the object being cut is your
SawStop reacts in, what? 3 ms?
On Sat, 22 Jan 2011 00:44:37 +0000 (UTC), Larry Blanchard
Versus 117ms for the Whirlwind. And you can both use the blade again
and start the saw back up 1 second after the E-stop. The Sawstop eats
a $120 Woodworker II and a $60 aluminum stop every time. And how many
false stops are happening now? Like when your buddy comes over and
wants to see it work...
Live in the sunshine, swim the sea, drink the wild air...
-- Ralph Waldo Emerson
If something slips, your hand can move a *long* way in 117 ms. Remember that
the Whirlwind mechanism won't engage until your hand is *right there* at the
guard -- IOW, when your hand is only inches away from the blade. And moving.
I agree that Whirlwind is clearly better than no protection at all. But better
than SawStop? No way.
And of course surgery to reattach amputated fingers costs much less than that.
The cost of triggering the SawStop is irrelevant: if you never get your hand
into a spinning blade, it never triggers, and costs you nothing. If you *do*
get your hand into a spinning blade, the cost of a new blade and brake
cartridge is miniscule compared to the cost of treating the injury you'd
receive without it.
Tell your buddy he's welcome to see it work if he ponies up the cost of the
replacements -- and tests with his own finger in the teeth.
If the Whirlwind ever comes to market, who's to say it couldn't also be
installed on a SawStop? Breach the Whirlwind's safety zone and the saw begins
the less drastic one-second shutdown, without damage to the hardware; touch the
blade and BOOM. Best of both worlds.
"Our beer goes through thousands of quality Czechs every day."
(From a Shiner Bock billboard I saw in Austin some years ago)
There ya go, Steve! And it only costs $2,000 over the normal cost of
a generic cabinet saw, too! They come with free tinfoil hats, too.
P.S: The tinfoil hats come with rubber holddowns so the wind doesn't
accidentally blow them off. Safety first!
"I probably became a libertarian through exposure to tough-minded
professors" James Buchanan, Armen Alchian, Milton Friedman "who
encouraged me to think with my brain instead of my heart. I
learned that you have to evaluate the effects of public policy
as opposed to intentions."
-- Walter E. Williams
Hey, I never said *I* would buy one. :-) People keep arguing the merits of
one versus the other without ever considering the possibility of them both
being available, so I just thought I'd throw it out there.
See Nad. See Nad go. Go Nad!
To reply, eat the taco.
I see pros and cons to both the Sawstop and the Whirlwind designs, I'll
leave that decision to their potential buyers. But in fairness, if the
Sawstop is NOT running, it's blade won't drop either. I don't see either
having an advantage when it comes to contact with a stationary blade.
Make it as simple as possible, but not simpler. (Albert Einstein)
Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar. org
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