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Brass or steel spheres (Oudin terminal)

Hi,
I have a perticular application that needs solid (or hollow) brass or
machineable
steel balls for a terminal on a small coil.
The small float balls will not work. The maximum diameter is 1 1/4" (actually,
that is the exact size I need.)

I have tried McMaster Carr, but they only have smaller sizes available.
They have the correct size in bronze, if this would work. I do not know
the electrical properties of bronze, would it be a good conductor, and serve
as the terminal on a small Oudin resonator?

Any other sources of odd/hard to find materials similar to McMaster that I
could

contact?

Thanks,

-Pete