N95 mask valve cover for 3M 8511 Pro Cool Flow

If you have a 3m tc-84a-1299 mask - you've probably been told it's not good for the current COVID 'protection' being mandated.

Most people don't get it - but these masks vent your exhaled air, so if you have COVID - in theory you'll spread it.

I found out the 'hard way' when I went to a hospital wearing mine and they added another mask on top of mine! (They didn't want me to remove mine - just add theirs)

Anyway - I designed this simple vent block to stop the exhale from exiting the mask. It works.

Why do this? Well - maybe you're stuck or love your mask so much you want to wear it anyway? Who knows but here is a solution that should keep those around you safer.

In theory.

Anyway - I put a think layer of double stick tape between the printed block and the mask.