Ok gentlemen , have a huge restoration on a terrible new install , a little better than 8000 sq ft. It included clean and seal ,travertine type polished walls. the master has a silver grey travertine with a wall that between jets and controls ,16 cutouts, with every one marked with 3 inch  long ,deep pencil marks running north,south and east west.
Its never been an issue , would touch them with 200 and gone, but to do that I would have to do the entire wall all the way back to polish. So before I start testing chemicals, Does anyone have a simple trick to remove these marks.
FYI the 6000 sq of floors ground perfectly flat and are amazing
Thanks for any input
Best Regards
Scott Wilson
Wilson Stoneworks Inc

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