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I never have. I do with more aggressive abrasives like chrome oxide, but chalk is so mild and it wipes away easily with a damp cloth.

If you're really worried about this, you can glue a piece of linen or denim to the back of a paddle strop with some barge cement, and use the dovo paste on that. This way the bevel will be pretty...

I believe the Dovo strops come with the fabric side already impregnated with their white paste. So it would seem to be intended for daily use.

I used my Dovo strop daily for many months and it...