I made a model, saved it as an STL file and imported it to S3D. This is what the cross section of the model should look like.
When I prepare the to print, random layers are added as seen below.
Has anyone seen this before? I have "Merge all outlines into a single solid model" unchecked so I know that isn't the issue. I was looking at printing it flipped over and I had the same issue occur but the number of layers and thickness of the layers it added was different.