Supplied air respirator

[Shipl14 19]

If anyone is interested, this is what I have come up with for a supplied air respirator system. It's an old SCBA mask I bought years ago for something else plus a leaf blower and a long vacuum hose. I got a speed control for the motor from Harbor Freight. I put a respirator filter cartidge in the line just in case the blower pulled in any vapors or whatever. The blower will be outside.  The white and red valve is for bypass air, but really doesn't seem necessary. The filter restricts flow quite a bit. I've used it a little for some gluing, but haven't tried it with any Poly Fiber stuff yet. Seems fine so far, except it's a little clumsy dragging the hose around. I set the speed at just enough to keep the glass from fogging. The air coming in is kind of cold, but will be better in warmer weather. Actully, a little cool air could be nice in hot weather.  I'm thinking of using helmet tear offs for the visor when I'm spraying paint.