Contour lines in Rhino don't render in Blender

I used the Contour command to generate lines for a mesh object in Rhino. My intention is to export the lines with the .obj and have them render on the obj in Blender. However, I do not see the contour lines when I render my object. Do you have suggestions?
Thanks in advance.

I think the obj format doesn’t support curves.

What you can do to get your curves to show up in blender is use CurvePiping on all curves you want to export with a small radius and then run ExtractRenderMesh on those curves.

Nice idea!

Great idea, thanks Lando.

Instead of using .obj, try this plugin in Blender:

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