well.One of the magazines recently did an article on building your own as
Ken do you remember what magazine? I subscribe to EAA and Custom Planes
so it wasn't in those.
and hose.A small shop vac would work fine if you can cobble together the mask
My original thought was to offer the fire department a couple of bucks
for there surplus \ junked SCBA masks but there don't seem to be any
available. Then I started thinking about buying a gas mask at the local
army surplus store (~$15 to 20 US). I figured I could remove the filter
cartridge and cut it apart, saving the thread body. I can attach a hose
to the thread body with a clamp and then screw the assembly back into the
mask. I could put a HEPA filter in the air line at the mask end as a
precaution.
If the mask isn't tightened to tight to the face in the chin area, the
excess air will vent out the sides. Not as nice as Wayne's system but I
think it should work.
For the air source, I was thinking about a 1 or 5 gallon shop vacuum.
Figured I can run the vacuum hose out into a fresh air area and hook the
hose from the mask to the exhaust port.
Haven't done any of this yet but these are some of the my thoughts.
Terry McClary
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