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Let us know what you learn.

As beautiful as I suspect they are, I would just learn to close the razor with care.
I have to do that with a couple razors and once I learned to do it life is good.

Hmm... ivory...... only ideas no direct experience.

Do a google search for "ivory piano keys warped"
Piano guys know a lot about ivory.

I do not know but suspect that ivory is not going to ...