Summary

Another version of my original molded mask:
http://www.thingiverse.com/thing:41201

Design created in Adobe Illustrator and extruded about 2mm using Rhino.

Instructions

I molded the PLA print using a heat gun and a plaster cast of my face. This version is thinner which allowed it to be molded at a lower temperature.

The file will need to be rescaled in order to fit your face. I calculated the size by using a piece of string which I stretched over the bridge of my nose to the inside corners of my eyes. Then measured the string and scaled the AI file accordingly.

Molded Mask - Version 2