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If new pits are forming then I'd retire it (save the hone for experiments maybe).

It sounds like it would continue to damage your razors to me; as in your first post.

My Swatys have a kind of "earthy" smell to them.

A petroleum smell might indicate some kind of solvent contamination, but I don't have a Primble in my collection. It might be normal for that hone...

I've had several barber hones that looked like the binder was damaged by soaking in some chemical. The same plane surface felt (and looked) different even after a fresh lapping. It seemed a bit...