I have some 20 year old silver loaded paint/ silver conductive paint Electrolube SCP003 ,kept in a 35mm film pot, in fridge. It cannot be called paint now, but not totally dried out, more like paste. I mixed a little with the resin part of some also quite ancient but good epoxy , bulk 1kg purchase about 10 years ago, also kept in fridge (red cap = resin ? any standard ?) Left the mixture overnight and it was same pastiness, ie no/little cross reaction. Prepared a pair of 1.65mm wide , flat , brass pins, by cleaning with methylated spirits only and drying off, deliberately no abraiding. One pin , wrapped 2 separated loops of 0.02mm insulated wire around as a precise separator.
2 hours ago wixed with the hardener and placed between the spaced crossed pins, held with a wooden clothes peg , holding force about 0.5 Kg. I just tried measuring resistance between pins. Did not think , in advance, about soldering fine wire to the pins for ohms testing. Connecting 2 croc leads to the crossed pins, still with clothes peg, resistance varied between 3 and 35 ohm , holding in fingers. Highly sensitive to slight forces in semicured state. Will let it cure until tomorrow and retest conductance and also peel/sheer strength of the epoxy. To be continued-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on