I'm a flexible kinda guy... I have used flex in wicked cold temps (degrees K)
and wicked hot (beyond component survival) and I can only think of one
application for the ole /1 product (adhesive) and that is build to print
heritage parts.
Usually the discussion is based on ED verses RA copper.  I like the ED the RA
work hardens pretty rapidly.  I like thin /11... .002 with 1/2 over 1/2; the
most common being .003 with 1/1 Cu.

I can go on and on... let me know...  and best of luck.

Two flex tips: keep vias AWAY from rigid and flex intersect and watch your
impedance numbers.

Boston Brad

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