well, militec is awesome for metal to metal connections, but for the FRN spydercos, I am trying tuff glide. I have something called PMI oil carried over from my paintball hobby works really well on FRN but it gets messy and needs to be washed and replaced weekly.
I am thinking that maybe I should use militec to treat my FRN knives and then add tuff glide, since i notice some metal on metal friction that is not really a big problem. I figure the militec can do whatever the hell it does and then it should stay and the tuff glide overit.
I have also been considering ways of poilishing a knifes internals without dissassembly. I used mothers mag polish to polish my pb marker internals and i think the same could be done on a knife, however dissassembly voids the warranty on most knives. I might try it on a knifekits.com knife first, though It seems really useful for a lockback where the lock creates high friction against the "tang". That is the biggest smoothness issue I have noticed with different knife types, some rough areas on the "tang" or lock.