(MARCH 2020)COVID-19 MASK - Hospital Edition - No supports - V 1.0 (OLD)

Note: This was developed when there was NO PPE available anywhere during first couple months of the pandemic.  We ended up shipping out over 500 free of charge to first responders around the US.

*CURRENT VERSION: 1.1 NO CAP*

Get it here:https://www.thingiverse.com/thing:4254474

*This version (1.0) is back by demand. It is the original remake.*

*Version 1.0 Assembly Video* *

* Just a reminder this mask version is an iteration on the great work done by lafactoria3d

ORIGINAL THING: *https://www.thingiverse.com/thing:4225667*

How this version came to be:

I have been cranking out the original at a pretty fast pace. Giving these to our local hospitals. The feedback I am getting is that they really need some space for glasses. Even if they do not wear glasses they are often wearing goggles. The original is just too thick on the nose piece. Also, the original looked very Bane/Vader and it was bothering some of the Nurses so I changed the cap to be a grid.

All parts are interchangeable with the original mask.

Because I am making these in volume I added some text to delineate the size I am printing at. SMALL - Reduce by 15% fits small adults and larger children MEDIUM - Reduce by 10% fits smaller adults LARGE - This is the default size. Fits adults and men with beards XL - Up the scale by 15% - Fits larger adults

Best way to ensure a good fit is to add the weatherproofing to the rim.

This is the weatherproofing I use (no affiliate links) https://www.amazon.com/Pres-P8225RL00-50XOH-Neoprene-Foam-Black/dp/B01G382DX4

UPDATE: After 2 test prints I decided to clip the nose back a bit more. Glasses/Goggles now fit much better. Will reinforce that area with more weatherproofing.

UPDATE 2: Added a tiny bit of material to the chin. Even though this is support free the angle was every so acute and the chin looked rough. Will print to see how it works. Total masks printed 24.

UPDATE3: April 5 2020 - The ridge at the back is causing some issues with some printers. I am including the OBJ file if you would like to take this into meshmixer and fiddle with it.

Found that BLUE SHOP TOWELS the paper kind are an amazingly effective filter element. A roll can do several hundred masks. We now have 4 printers going full time 3 more coming next week.

We have printed over 50 masks and delivered them all over NY State. Thanks everyone for sharing.

UPDATE 4 - April 9 2020 - Next iteration. This one is D. I thickened the walls of the cap doubled it in size because after almost 75 prints it is apparent it was too thin at the base. I also trimmed the sharper area around the nose back a bit.

Side note: Confirmed BLUE SHOP TOWELS can be used as a filtration device. Watch my video above. Thanks, everyone.

Print Settings

Rafts:

No

Supports: 

No

Resolution:

0.22

Infill: 

10%

Filament: Any PLA/PETG Any

Category: Other