Temp Flex, High performance Cable Systems, in Massachusetts makes precision
extruded copper wires in polyimide or acrylic coatings. Sort of like ribbon
cables, but fine gauges are their specialty.  Maybe this will help.

Temp Flex
11 Depot Road
So. Grafton, MA 01560
Tel: 508/839-5987
Fax: 508/839-4128
Contact Peter or Ray Baril