Polygon Mask - Voronoi Style (Single walled)
Should be easier to print than thing 179222. http://www.thingiverse.com/thing:179222
There is a normal and a thick version of the mask.
Edit 2014-04-08:
Check out this mask, it should be easier to print: http://www.thingiverse.com/thing:293246
Category: SculpturesThe author marked this model as their own original creation. Imported from Thingiverse.