Front viewport not showing extrusions

Hello, Im wondering why the front viewport in this file is not showing the extrusions? Is there a setting that Im not aware of?

Untitled 2.3dm (2.8 MB)

They are on the Back., nvm, I’m not seeing right.

It looks like the extrusions are just extruded curves, i.e. open at the front, and perpendicular to it, which is why they don’t show. The view of the curves themselves is blocked by the blue dial.
If the curves are closed and planar, the extrusions could be closed by capping them (command Cap), which will make them show up.


you have set it to rendered view and have disabled the Surface edges. Check Surface Edges under the Panel for Display and you are good.

Thanks to you both!