Need Help Rendering A File

I am trying to render this file

Jtracks.blend (783 KB)

like this one

but can’t figure out why it’s not rendering the same way

please help

p.s. I love Blender, with it, I was able to do this

Turn off the renderability of BezierCurve.004 and BezierCurve.005, Turn on the renderability of Cube.005 and give it a new non wire material.
This gives the attached render


-Richard Marklew

that was very helpful
thank you very much

just one last question, how do i render the outside plate (the triangle — in wireframe)