Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4806441.

I wanted a mask that would fit ME so I made one that follows the contours of a head model. Additional requirements were:

• Fully parametric so I could make custom fit masks for other family members.
• Enough filter area for easy breathing.
• Minimal material use and quick printing with a .8mm nozzle and .32mm layer height.
• Replaceable grilles for fun and artistic expression.
• A design that works with hard or soft plastics.