COVID-19 Mask with Dechatlon Subea Snorkel and 3M particle filter

prusaprinters

<p>You can use 3M 5911 P1R or better 3M P3 particle filters with the SUBEA snorkel mask found in Decathlon.<br/> It has a big valve to prevent moisturizing from breath the filters and bacteria deposition. The Air always flows in one direction, through filters, piston valve, your lung, out through subea mask valve.<br/> Please read the print instructions,<br/> the valve piston should be light as possible around 10g.<br/> the adapter should be printed in contour to ensure good sealing performance and glued to the main housing so this way it can be detached anytime from the mask.</p> <p>find old concept R1 step as well, it has a much smaller valve, if you want to test out the principle, or need adapter geometry for this mask</p> <h3>Print instructions</h3><p>use G code, I used support only at the end of the housing in the area where the adapter comes, It was designed to be possible to 3d print easy</p>