NATO RD40 DIN adaptor for AMBU filters by Automagical2 3d model
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NATO RD40 DIN adaptor for AMBU filters by Automagical2

NATO RD40 DIN adaptor for AMBU filters by Automagical2

by Thingiverse
Last crawled date: 4 years, 1 month ago
Easy to print,
Allows use of medical AMBU ventilator filters in military and DIN masks.
Every ambulance/hospital has stock of those.
Main problem is thread may be starting at different angle in each mask, not only model to model but copy to copy of same model mask.
This is "no problem" with round filters.
Well, those aren't round and You might end up with filter sticking out in unfortunate directions.
I have two solutions to that:
print one piece version and shim it with gasket/teflon tape
print two part version and glue them in proper position relative to each other
You might also be interested in cheap and easy face shield design:https://wiki.hackerspace.pl/projects:covid-19:english

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