On Wed, 24 Nov 2004 22:40:30 GMT, Don S
vaguely proposed a theory
.......and in reply I say!:

remove ns from my header address to reply via email

Know the feeling(s). I get the glasses displaced and the fogging, and
I can also feel the air coming in at my nose. Lucky for me, I don't
need prescription lenses, so I can wear a face shield when I wear a
mask.

Try petroleun jelly around the rim of the masks. It can help. You
probably need a fair bit, but start small and work up. The fogging
will still probably happen a bit, as some of it is actually coming out
through the mask, not just the gap. If pet jelly irritates you, try a
salve cream. Savlon or whatever.

I find the paper masks with the valve are a bit better as they allow
slightly better cooling.

The only other solution is one of those pressurised face masks / hoods
that have a little pump at your waist, pumping in through filters. Not
cheap, but getting cheaper. If you are going to do any more work they
may be worth a look.

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