Mask with filter

Face mask with replaceable filter

This is a rework of:
https://www.3dwasp.com/mascherina-stampata-3d-da-scansione-3d/
and
https://cults3d.com/fr/mod%C3%A8le-3d/outil/masque-de-protection-covid-19-ffp2

Use nano copper filament for better protection or at least copper filament for the filter part.

Possibility to add filters of 40 mm diameter.

First version, will try to update.
Feel free to remix this.