There are two main components to this mask.

1. The shield which is made with an empty 2 lt soda bottle.
2. The bridge which is a 3D printed part made of flexible nylon
3. The ring which is a 3D printed part  made of PLA. This part is optional and is used as a template to cut the soda bottle to size.

The full construction procedure is shown on a youtube video made by myself to show how to use and assemble the parts.

https://www.youtube.com/watch?v=AhM5X84SaDo

There is also a spanish version of that video, look for the link to it on the video description

The following are the settings for each of the two parts

Bridge v6_1mm.gcod

Printing Time: 1h 15m
Layers: 50
Filament needed: 6004 mm
Quality:0.2 mm
Temperature: 230 C
Material: Nylon
Support: NO
Adhesion: NO

Ring.gcod
Printing Time: 14 m
Layers: 10
Filament Needed: 1107 mm
Material: PLA
Quality: 0.2 mm
Support: No
Adhesion: No
Temperature: 204 C