Ian:
Many thanks for your posting....makes sense to me! Although I posted this in an earlier thread...for those new builders(like me) looking for a good choice of respirators and good technical advice/service, check out www.labsafety.com.

The Feds just came out with a new list of carcinogens...and sawdust is on it....and most are aware of the potential for the development of wood/fiberglass allergies(what a way to screw up serenity). So...given my newfound obsession to building wood/fiberglass kayaks, I can with serenity feed my progressive addiction while breathing a healthy sigh of relief.

I have this image of myself going to a 12 Step Meeting (WKA-wood kayaks anonymous) for the first time....seeing a bunch of folks with respirators on covered with sawdust. Then I leave and see my wife smiling and entering a
WKAL-anon meeting. Whew...too early in the a.m...another time...
Later...Bob