Getting all the mesh lines along with hidden lines for make2d?

Make 2d isn’t working appropriately for this model. I don’t get inside network curves for this object.

SAMPLE FILE_MESH MAKE 2D.3dm (2.8 MB)

Following is the type of drawing that I require. The dotted lines’ colour I’ve changed in Illustrator.

Make2D only uses mesh wires on unwelded edges. If you want the whole mesh structure, run the Unweld command on it with a value of 0. You should then get all the mesh edges.

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Thanks! That worked!