Thank you for this great tip.
Since no one is concerned about the fire hazard and I will not wet the board
I think I have trouble imagining framing for complex roofs.
My hole saw blades get pretty hot at high RPM unless I wax or soap the sides. Probably the teeth need to be reset, if somebody even bothers to do this.http://www.google.com/search?q=saw+tooth+set+tool&client=safari&rls=en&s ource=lnms&tbm=isch&sa=X&ei=mS1QU6mSOMuisQSgoIGwCg &ved=0CAgQ_AUoAQ&biw=1231&bih=806
A wet towel in a plastic bag should be all the insurance needed.
Yes you can get them sharpened and reset.