i'm having trouble in rhino, shapeways is saying my models normals are inverted and as far as i can see it's not? can any one help?
Your model has a large number of non-manifold edges in it - see the attached screenshot. For more information about fixing non-manifold problems, see the following tutorial: https://www.shapeways.com/tutorials/fixing-non-manifold-model s Cheers, Bart