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This thread has completely jumped the shark.

What is the point of the multiple posts?

We know that the slurry off a JNat is acidic. I posted pH results of a couple of JNats maybe 7 years ago. Steel in an acidic solution is going to oxidize.

Two things that perform like oil are glycerine (aka glycerol) and Smith's Honing Solution. Both can be diluted with water, which allows for the ability to vary the viscosity and for easy removal...