Water marks that WILL NOT come off???

  • We are currently upgrading MFK. thanks! -neo
If you tried a razor blade/water? and if it didnt work no amount of vinegar will work. Your best bet is oxalic acid. If a sharp razor cant get it off then its etched into the glass thus staining it. You need to buff it off with some sort of jewelers stone if its etched as in sanding the glass down and polishing it essentially.
 
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