I'm putting this out to the SH community as I know we have members with 3D printers.
There are some Montana Dr.s that have designed a 3D printed mask into which a replaceable filter can be placed. The replaceable filters are commercially available. The design files are available from https://longliveyoursmile.com/3d-printable-mask-for-covid-19/ and https://www.billingsclinic.com/foundation/.
These won't be approved by any agency and there won't be any fit testing. But they are better than some of the crazy shit I'm hearing from relatives in healthcare.
There are some Montana Dr.s that have designed a 3D printed mask into which a replaceable filter can be placed. The replaceable filters are commercially available. The design files are available from https://longliveyoursmile.com/3d-printable-mask-for-covid-19/ and https://www.billingsclinic.com/foundation/.
These won't be approved by any agency and there won't be any fit testing. But they are better than some of the crazy shit I'm hearing from relatives in healthcare.