: Many thanks for the website/advice Kent....and the 'brotherly advice' Mike....I tend to be very careful with my pipes....having had a family member with lung cancer and worked with many with asthma(one 60 year-old who died during an asthma episode)....and....having a new addiction to building wood/fiberglass kayaks...I figured there must be a way to 'breathe easier' regarding all of these floating particles.

Ian...many thanks for your suggestions as well. I have also been warned about the supposed filtration of paper masks....be careful.
Bob

Kent is right,

: My brother, an indoor air quality scientist, once told me that paper dust
: masks are just "feel good" tools. They only stop the microscopic
: "boulders" and "limbs" that would have been trapped by
: the body's own filter mechanisms (snot and hair) while the smaller, more
: dangerous particulates would easily migrate to the vulnerable areas of our
: bodies. Definately use a respirator, the replacement cartridges are cheap
: and most have a snap apart lid with a pre-filter that can be washed(looks
: like a piece of scotch-brite pad). Cedar can be an especially nasty
: irritant. Good luck, work safe.