Many thanks for all the suggestions.
Can you just shear off strips from a sheet?
I have found a solution that turned out to be reasonably simple. I
met someone in our area that is member of a local jewelry and gem
club. They suggested using some scrap 12 gauge romex electrical wire.
I stripped the insulation off, annealed it, ran it through 1 pass of
their roller mill to 20 gauge, annealed it again and voile, I’m done.
The club was very helpful in resolving my problem.