Face Mask

This is a face mask with replaceable filter which can be made by vacuum forming. hope it be useful. It's free for personal, and commercial use against Covid-19 it's a parametric design, and you can modify it just by change of face length "LFace" parameter. it's not the final design, so before making the die check all the parameters. Human face model used in this model: https://grabcad.com/library/human-face-2