View Single Post
  #8   Report Post  
Posted to rec.woodworking
whit3rd whit3rd is offline
external usenet poster
 
Posts: 2,017
Default How to tell if a saw blade is sharp?

On Sep 24, 10:05*am, -MIKE- wrote:
Sorry if this is on topic. * :-)

I suppose I could just google it, but here goes...

There was a 10" Delta 60 tooth on this table saw .... *I cleaned it all off


Is there a way to tell if a saw blade is still sharp enough or needs to
be sharpened?


Or is it as simple as just trying it and seeing if it cuts clean, smooth
and fast?


Yep, that's it. Some (high-end) tools can log the torque on
the motor and the total energy usage so you can look for
the watt-hours per foot of cut, or the force on the teeth, but
mostly you make a fast cut on a bit of scrap and figure it might
be dull if the motor complains.

Slow cuts or unstraight bits of wood will not be good tests.

The cut (remember, cut it FAST) should not look polished; that
polished look is the first sign of a dull blade.