Hello, I'm having a problem with my car model, continuing on from this topic. Magics shows there are no errors (although overlappig triangles are tolerance dependant) but whatever I try the Shapeways validation says there are inverted normals. I could be wrong, but unlike overlapping triangles that are considered overlapping or not, depending on tolerances, normals are either pointing one way or the other... so where is the error? Is it in the model, but magics cannot detect it? Is it in magics, wrongfully saying the model is ok? Is it in the shapeways validation? Note: I first tried uploading different versions that were hollowed out, with the same result. Daddymack tried helping me out, but so far no luck.