Additional exhalation valve for drapes/respirators/masks
Description
An additional exhalation valve for the homemade masks.Rubber diaphragm is cut from the inflatable balloon and glued on the elevated part in the middle of valve body. 04/05/2020 Added different grid patterns (no supports) and version of cover with no supports. Now you don't need supports. Added stencil for hole with the middle point 04/09/2020 Added press fit version for fabric masks. You can use a drop of glue depending on the fabric thickness and the printer's calibration 03/06/2021 Added classic look cover
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