"todd" wrote in message

I'd have to echo Leuf and say that while once the the part of the piece
you're cutting has already been cut when it passes the rear of the blade,
the problem is that it's still attached to the part you haven't cut yet.
It gets hard to keep a 6 ft. board parallel to the blade when the amount
of moment arm able to force it out of parallel is increasing as you cut.

Not yet mentioned, but very important, is a proper outfeed table, or
rollers, or something to support the wood as it exits the blade. Length of
the fence does not matter if the 8" board is falling off the end and coming
up in your hand.