Hello folks,

I'm building an s&g pram, and I don't particularly like the idea of
filtering out the 'glass sanding dust with my lungs. I have one of
those big, cumbersome masks with interchangeable elements, but it gets
in the way of my glasses, and I'm less inclined to sand through the
fabric when I can see what I'm doing. I've tried both the throw-away
paper masks and a nuisance mask with the flapper valve for exhaling
(which also gets in the way of my glasses, but not quite as bad as the
big mask), and no matter how much I cuss and massage those metal
strips that are supposed to conform the mask to my nose, I can't make
them work. Exhaling with either fogs my glasses. I'm assuming that if
the air goes out that way, it must come in that way, too. In fact, I
can feel it entering when I inhale. As far as I can tell, I don't have
a misshapen shnozola. What's the trick?

Thanks,
Don