: You need a lot of fine dust to meet the lower explosive limit. I
: wouldn't worry about using a heat gun.

: From http://www.wclib.org/pdfs/msds6_95.pdf

: FIRE & EXPLOSION DATA
: Flash Point...........................Not Applicable
: Autoignition Temperature.................Variable
: (typically 400-500°F)
: Explosive Limits in Air.....40 grams/m
: 3
: (LEL)
: Extinguishing Media...........Water, CO2
: , Sand
: Special Fire Fighting
: Procedures...................Wet down with water
: Wet down wood dust to reduce likelihood of
: ignition or dispersion of dust into the air.
: Remove burned or wet dust to open area
: after fire is extinguished.
: Unusual Fire &
: Explosion Hazard.................Strong to severe
: explosion hazard
: (if wood dust "cloud" contacts
: an ignition source)

Keep forgetting to just ask you guys, firemen have all this data :)

Bill H.