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Positive Pressure DIY Mask (hackaday.com)
13 points by mbjorkegren 2286 days ago
1 comments
russfink 2286 days ago
Could use a list of steps and parts, including common substitutions (aquarium air pump).
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avmich 2285 days ago
Wonder if an ejector pump, sucking ambient air and driven by air from a compressor (like auto compressor), would work adequately.
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