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I save mine on my slab of granite (OCD for true flat) and save it in empty prescription bottles. Thanks for the post.

I do . Works fine. Make sure your on a flat surface and draw thick grid lines. Random orbit works fine. Then redraw light grid lap with your lapping plate of choice. Finishing stones I tend to lap...

You know your first lapping plate still works fine. Slower but so are you. No need to write an essay about it and your finds.
Are you bored Ron? Each honer finds his way with what works for each...