On Fri, 23 Jan 2009 04:33:52 GMT, PHT
wrote:

Got some insert blanks for the new table saw. They are made out of UHMW.
I have a WWII blade and I'm wondering how much running the blade through
this UHMW will it dull the blade.
Don't want to do it if it means the blade will have to be sharpened
sooner. I just got this blade a couple of weeks ago.

Paul T.

Well, as soon as you use the blade for plastic or wood, obviously it
won't be as sharp as before the cut. Plastics won't dull a blade all
that much, especially for one or two inserts. I never understood why
folks buy inserts--they are very easy to make from a piece of
cabinet-grade ply scrap and work just as good, maybe better because
the wooden ones can be shaped for a perfect snug fit.