March 22, 2020
Description
You can use hepa filter + activated charcoal.
For working in a dusty environment it will work :D
Tested on:
Czech CM-3
Czech CM-4
Polish MC-1
Polish OM-14 Faser
03/23/2020
Added Grid for cover- you can choose to use ring or grid for holding filter in place.
03/25/2020
Added test threads for GOST and NATO(If the NATO will fits I will make a filter for masks with NATO threads too-I don't have any masks with NATO thread standard=
I cannot guarantee compatibility)
Added NATO threaded filter.Thanks to https://www.thingiverse.com/lukewd/about for the test print.
03/26/2020
Added a wrench to help unscrew the cover.
03/27/2020
Added Top grid 2 and Bottom grid 2 with different pattern for who has a problem to print fine mesh.
License:
Creative Commons - Attribution
Bastrym
