March 24, 2020
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
License:
Creative Commons - Attribution
Bastrym
