Don't laugh but I have found one of the best ways to remove the excessive rub 'n buff without removing from the engraving is .............. a hot breath. (doesn't work after eating ice cream ;-)  ) Just 'huff' on the item and polish. (I always wash my items before packing so I don't have to worry about spreading germs. ) I've tried some thinners, WD, etc. but it will also remove from the engraving and takes more work to clean the glass for packing. My two cents.

Zona