Modular face mask - more HEPA filters upgrade

Fitting mask allowing to easily attach different types of filters.

This remix contains new sturdier face mask and two modules for other HEPA filters.

After communication with sellers, here are available filters and their description obtained from the sellers.

HEPA filter Concept VP4360, filtration type H13 (> 99.95%)
https://www.my-concept.cz/filtr-vp4360-vp4370-vp4380_d139703.html

HEPA filter Electrolux EF75B, filtration type H13 (> 99.95%)
https://www.nipponcec.cz/filtr-hepa-ef75b-pro-vysavace-electrolux-accelerator-cyclonicite-ergospace-energica~zef75b.html

and

https://www.nipponcec.cz/filtr-ef75b-f120-s-ochrannou-mrizkou-vysavace-4055010146-~z4055010146.html

HEPA filter Menalux EF75B, filtration type H10 (> 85%), not suitable for mode then dust protection.
https://www.nipponcec.cz/hepa-filtr-f120-menalux-pro-vysavace-electrolux-accelerator-cyclonicite-energia-ergospace-ergoeasy~zF120-5.html

!! It's not a medical device, but better then other home made masks. !!

Assembly

Glue all the parts together for the best results.

Safety precautions and cleaning.

All the filters are washable. I suggest sanitization using isopropanol after each use. Spray the whole mask with isopropanol and close it in an air tight bag. Then hang it on heater. That helps the sanitisation with IPA vapour.
Keep it in the bag until next use. Preferably 48 hours.

Hooks available here: https://www.prusaprinters.org/prints/26029-symmetric-rail-panel-heater-hook-hanger

Better oversantize then undersanitize.

Beware of high temperatures as PLA cannot handle it and IPA is flamable!

Be very careful and if not certain you can use it safely, do not use it at all.

Print instructions

Printed in PLA, but feel free to experiment with more materials.
The finer the layer height will be the better, but it works great even with 0.3mm

Supports

The face mask needs NO supports
The module for VP4360 filter needs NO supports
The module for EF75B filter needs supports, but no supports are needed for the clamps.

Assembly

Glue all the parts together for the best results.