Blowing air on the saw [Was: Saw piercing]

    ...I thought of even making something to blow air on the
saw while sawing, anyone got some tips about this?  

Dave,

I have known wax workers to attach tubing from a small aquarium
air pump to their saw frame to blow away wax shavings. I don’t
know if this would work for metal filings, but if you do a lot of
piercing, it may be worth a try.

Hope this helps.
Sharon Z.