Hi Max, Make2D partially works off of an internal pixel grid to initially determine whether points along a curve are transitioning to visible or hidden. If the pixel grid is too coarse it can affect accuracy - there is a "Resolution" option in the Make2D command options that controls this density, try setting it to a higher value like possibly 30 (this generates a 30 megapixel internal depth map) and see if that helps. Setting it higher does consume a lot more memory though.

If that does not help could you send me an example file where you are getting overlapping or non-touching lines?

- Michael