Stephen, (and others),
I became curious about the idea, so I created a die for six outer
strands and a core. It's tricky to work with, but the resulting cable
looks pretty nice. I haven't heard back from you about whether that
was the pattern you were after. The wire I used was 0.015" and the
resulting cable is about 0.050". I suppose that could be calculated
in advance, but just measuring it before and after works for me. :)
Now to decide what to do with a few feet of approximate 16g cable. It
feels good to run through your fingers, very smooth, very flexible.
Here's an image for you:
I think if I'd started with 0.010" wire it would've come out to
about 0.032", my usual preferred size for rings. Might have to make
myself a new ring just to see how it comes out...