I believe all saws now must have a riving knife.  Nothing works better than 
a straight fence and RESPECT for the cutting area as my friend  "8 1/2" Jack 
will tell you


-----Original Message----- 
From: dave
Sent: Thursday, June 02, 2011 11:11 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Suicide brakes on an AC universal motor?

On Thu, 2011-06-02 at 09:28 -0400, gene heskett wrote:
> On Thursday, June 02, 2011 09:17:34 AM Dave did opine:
>
> > On 6/1/2011 11:56 PM, gene heskett wrote:
> > > This is NOT a kickback pawl.  This is a solid steel plate that mounts
> > > to the old blade guard bracket, under the table insert.  You must
> > > make a zero clearance table insert, I make mine from the 1/2" thick
> > > melamine coated phenolic from Highland Hardware in Hotlanta.  I wrote
> > > the gcode to carve the outer so it fits the table quite snugly, then
> > > raise the blade to cut the slot, then take it back to the mill and
> > > extend the slot all the way to the rear so the shark fin can rise and
> > > fall with the blade.
> >
> > OK.  I get it now.
> >
> > I think my Dad has one of those on his fancy Powermatic..   I'll have to
> > look.
>
> More than likely, the Powermatic's are quality saws.  But a recent lawsuit
> has changed the landscape and caused lots of saw peddlers to do major
> redesigns of their so called blade guards, usually (IMSNHO) even more
> worthless than the ones of 5 years ago.  They still seem very adverse to
> just plain using enough quality steel, but 2 pounds of fawncy plastic that
> is always in the way seems to be their answer.  It seems to satisfy the
> legal dept, but they are a legendary failure at understanding that if its
> not installed when the saw is in use because it is such a pain in the ass
> to use, then it is still an outright failure.  But its our fault for 
> taking
> it off.  Scroooem.
>
> > That does sound like a really good idea.
> >
> > That is entirely different than an anti kickback pawl.
> >
> > Dave

I think my choice would be to make a carriage for the saw and try to
keep my brain in place and not reach for  something I shouldn't.

The idea of  power driving the carriage sound good also.

Dave
> >
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>
>


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