I put this aside for awhile, then when I came back to it I finally figured out how to do this circular weave.
This is a true over-under-over-under.... weave of three strands that wraps to form a circle with exact endpoints.
There are no jagged ends or overlapping surfaces or solids.
I put it in the form of a ring.

This rendering I adjusted the material of the weave to be less metallic because
the reflections were too intense and obscured the weaving effect.

Hope you like it. I can send the 3DM file to anyone who might be interested.

Cheers,
fleetfoot

I forgot to mention that I used the FLOW function, and it took me three tries to get what I really wanted. But when it worked
bingo! What a powerful tool!