gfretwell wrote, on Mon, 10 Nov 2014 01:30:27 -0500:

Get some wire wreath frames. They are about 10 gauge steel wire,
rolled into a perfect circle.

I'll look around for some, as the strong wire circle is
what I was aiming for (coathanger won't ever get circular).

I did look up orbital shapes, based on another response,
but that bow-tie shape is much harder to replicate in wire.
http://sciencebock.wikispaces.com/fi...3/orbitals.jpg

I wonder if there is a common household wire shaped like this?
https://alexlemayscience.files.wordp...rbitals-mg.jpg