This is for a capactive sensor application. Ideally the connection will be less than 100 Ohms and unaffected by high humidity.
I looked at silver loaded epoxy, but the smallest size that I can find on Ebay is $60 for 14g. Silver loaded paint is available in smaller quantities, but has no mechanical strength. Screws etc. cannot be used because the carbon fibre is brittle and has no strength across the grain.
At the moment I'm heatshrinking multistrand tinned copper wire against the carbon fibre surface, appying a drop of silver loaded paint which wicks by capillary action. Once that is dry I spray PCB lacquer over the lot. Not very elegant and I have no idea if this will be reliable in the long term.
What do othe people use, spring fittings, custom connectors?