3d print problem

benmorgan

Hello All
Got a little problem that I am hoping your combined wisdom can help me solve.
My model looks smooth and all good to me in sketchup.

Bur when I import to shapeways.com to 3d print, it looks dented and has a triangular hole in the middle.
see the model here:

Any suggestions to fix this problem?

Thanks

Rich O Brien

Can't view link

dukejazz

Can't view your link also - duke

Have you triangulated your model?
Have you reverse faces or size model right?

The free ver will tell you if you done it right as a test