For wood to wood lubrication, I like to use pure beeswax.
I've had a few candle stubs left over from a hospital chapel (my photography needs all the help I can get) and used them up but I recently got a small chunk from beekeeper at a farmer's market
For metal to metal, Lubriplate product 630-AA is what's recommended for 'dorffs---it's much thicker than regular Lubriplate so it's not going to dribble off onto the wood.
Good luck! It sounds like a really cool project
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