How tight does my blade have to be?
I have a heck of a time loosening the arbor
nut when I switch blades on my tablesaw. How
hard do I really have to crank on that nut when I
Don’t knock yourself out tightening that arbor
nut! It only has to be snug.
Every saw’s arbor is threaded so the nut will
self-tighten. The arbor on a right-tilt saw is a lefthanded
thread; on a left-tilt saw it’s a right-handed
thread, just like a standard screw or bolt.
For either saw, the force of the blade will tighten,
not loosen, the nut as the blade is spinning. It’s
highly unlikely the nut will come loose from
inadequate tightening, so there’s no reason to crank
down on it with a ton of force.
This story originally appeared in American Woodworker September 2002, issue #95.