If you need exact duplicates, I would take the time to carve out
some small jigs out of some wood. Just sketch the design of choice
onto the wood and carve down from the center outward, leaving an edge
for your material to reference.
I built something similar for bending spirals out of stainless,
albeit they are out of aluminium, making several jigs depending on
the thickness of material. My largest one will accomodate 5/16 stock.
These give me repeatable sprials each and every time, granted, these
are probably much larger than you need, but gives you the point.
Here is what im talking about.
I start on the outside bending my way to the center, since the
spiral is not on one plane, we have to flatten the spiral and tweak
it to shape after carving the points on it. In 22k you probably wont
have too much of an issue with this.
Or just print out a sprial and bend, matching the print...