A PFA mag (if my memory serves me well) some time ago had a design for a
homebuilt version. All it used was a 3M mask with the inlet hose coming into
one inlet hole and the other inlet hole blocked off. Any type of hood can
then be placed over this.
One thing you do need to check is that the compressor is delivering _clean_
air. Some compressors can introduce minute quantities of vapourised
lubricating oil into the air stream which kind of defeats the purpose of
trying to breath clean air.
Tony
-----Original Message-----
From: Allen, Peter <Peter.Allen@auspost.com.au>
Date: Friday, January 29, 1999 2:29 PM
Subject: Forced Air Respirators
>I think it is the ancient Greeks, who are credited with the saying,
>
>"Share your knowledge. It's a way to achieve immortality"
>
>Seeing I have nothing to share, I'll ask a question of the "Europa
>Immortals".
>
>
>There was a reference (by Andrew Robinson) about the usefulness of a forced
>air respirator system when spray painting.
>
>On a similar train of thought, I had the pleasure of using a "forced air
>hood" when I was sanding fibreglass in preparation for a scarf repair job.
>I would have to say that along with a pair of disposable overalls it took
>the itchiness out of the activity.
>
>While this system was part of a large, well-equipped facility and I'm sure
>it was as expensive as it was extensive, it occurred to me that it
>would/should not be too hard to make your own system for use in the home
>workshop (aka Aircraft Production Facility or APF). Has anyone done this?
>
>If so,
>
>What air source did they use?
>What pressure?
>Will my lightweight 3/4 horsepower compressor do the job?
>Is there any air filtration issues?
>How did you make the hood?
>
>Or is it easier to buy a ready-made system?
>
>With the amount of sanding that is involved in giving "birth" to a Europa
it
>just strikes me as a good piece of kit to have for people like me who are
>prone to itchiness.
>
>
>Thanks in advance
>
>
>Peter "I have just bought the house, now I need to build the APF" Allen
>
>Oh and put a dint in the mortgage :-)
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