Creating curvy 3d designs with OpenSCAD and QCad

Recently, I put together a demonstration object in OpenSCAD and QCad for a friend to impress people with.
His response, after I demonstrated how it was done, was “if this was a screencast, I would watch it”.
I don’t like screencasts, so I thought I’d write a tutorial.
The object itself is fairly useless, but looks cool and is easy to make. Hopefully this will make OpenSCAD a bit less scary.
You will need QCad and OpenSCAD installed, so do that first.
To get QCad for Windows, download it from sourceforge. OpenSCAD is at openscad.org.
Here is what the finished object looks like printed:
Finished Object
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