Removing aluminum "skid marks" from glass.
Does anybody out there know what I could use to remove the silver streaks from the glass fronts of solar panels? Sometimes when unpacking panels and the frame of the one being moved rakes across the one under it, it will leave aluminum streaks on the glass. These seem to be fused onto the glass. Nothing I have tried will remove this stuff. Goof off, Mr. eraser, Windex, water, and lots of elbow grease, nothing removes it. I was hoping somebody knows of a way to get this stuff off.
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.