i wear a mesh screen face mask mostly, goggles and glasses, i inserted headphones and a swimmers mp3 on my ear muffs, the mp3 is under 20$ and worth it.
i have been looking for a powered breather dust respirator, and they cost from 300-600$ wow!
yesterday i was in my work shed and noticed an inflatable bed inflater sitting next to my respirator and face shield, so i assembled my own DIY powered breather! under 20 bucks and it works very well.
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http://i.ebayimg.com/t/Waterproof-USB-MP3-Player-Swimming-Diving-Water-FM-Radio-Earphone-4GB-Black-/00/s/NjAwWDYwMA==/$(KGrHqJHJEME+cy6rtM6BQWYy2EMgg~~60_3.JPG
the respirator is designed for dust and will later be fitted with filters for emissions. it is 98% air tight, thanks to my wife's box of materials, i used a materiel called PUL its air tight.
any questions just ask, i plan to make another with a 3m full face shield and more compact to the head.
The amount of air that it supplies is more than enough for heavy breathing, and can be adjusted via the battery pack.
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