I recently purchased a number of Nicholson needle files in various cuts and need some advice on how to store them. I'm using them in my hand drill restoration past time. My current wood shop is in the basement (actually cellar) of the 100 yr old Dutch house I'm renting, so the humidity is high. I have a Schwarz-inspired tool chest with a couple Eva Dry rechargeable dehumidifiers in it that have kept my tools rust free, but they all get wiped down with jojoba oil.

From my understanding I can't wipe down the files with oil and I can't leave them exposed. I've also seen conflicting info on putting metal in tool rolls. Some say they absorb moisture and are therefore bad for long-term storage. I could bring them upstairs, but prefer to keep them with the rest of my tools.

I use them sporadically, so they don't get constant use. I realize this is a lot of details for some needle files. They aren't cheap though and this is a good learning experience.