Is the oak in contact with the iron? It's well established that iron
fasteners in oak will eventually corrode. Apparently the tannin acts
as an oxygen scavenger. Now, how much damage to the lathe bed the
contact will cause is uncertain, but I'd err on the side of caution.
Yes, I think it will corrode. I left a stack of oak boards on my table
saw's cast iron table and it rusted in a week or so. My shop is in a
non-condensing environment. And, the table had been coated with past wax.
I will admit that the wax might have gotten a little thin, but it sure did
rust. I have polished away at the rust, which does not feel rough to the
touch, but I can still see where the board was.
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