In reply to gimmergimmer:
Gear cables are not flexible enough. I wish it was as working in a bike shop means I would have an endless supply.
I use aeronautical control cable which is multiple strands made up of very fine wire.
This is easy enough to buy along with the nico crimps.
However buying the hand crimping tool in the UK is impossible. I bought mine in Australia 20 plus years ago from a ships chandlers.
Drop me a dm if you wanted them doing
Jim