Dan Smith
1/18/2010 12:02 PM
Possible if you have "any" degree of hard water. Water spots are dissolved minerals from under ground rock formations. The best Idea I have found is Vinegar and steel wool. It's work but it does the job. Thinking of Paul from Europe's idea about wet newsprint, this might help soften the minerals for the vinegar to work faster. I have also used a flat razor for regular house windows with the steel wool and vinegar, but not on a 6.3's window.