Trouble printing a mask

[curious aardvark]

well all I can say is the stl imports into makerware without any problems.

How big should it be ?
The stl file is only 18mm at the widest point.
Currently printing a project - but I'll have a go at the mask after. Apart from the thinness of the part, can't see any obvious problems.

Lmao - okay ran a print preview:


Yeah i can see one or two issues there.

I'll run the file through the fixer-uppers in s3d later - but there's definitely major problems with the mask making process.