Make 2D issue

Hi

Im having an issue with make 2D. I have made a surface in Rhino for Mac 5.4.1, then panelled that surface using Lunchbox for Grasshopper. Now when I try and Make 2D the model it just shows every single line, including those that should be hidden, even when hidden lines are turned off. Does anyone know why this is happening and how I can fix this. Very much appreciated!

Gareth!

Internal Panels.3dm (8.9 MB)

Your geometry is reaally far away from the origin - that’s very likely causing some tolerance issues ( Rhino’s double precision gets you ~15 significant digits )

Here’s the result I get (on a Mac) after moving your model to the origin, there are still a few stray edges but those could be cleaned up manually:

Ah thank you so much! This has worked perfectly! I thought I was going to need to redraw everything.