Join Date: Apr 2006
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Re: Remove dried salt from porthole glass
If it is salt, as the others said, that's water soluble and letting it get damp (cover with damp paper towels & wait) would let it come off easily.
If it is NOT salt, and the portlights really are glass, one alternative is to take a fresh single-edged razor blade and carefully hold it at a low angle, and scrape. Unless you dig a pointy corner of the blade into the glass, this works on windshields, glass stove tops, portlights, windows, no problem. Some folks will take a stone or fine sandpaper and just round off the corners of the blade to make sure it can't nick.
Home-made glass cleaner often is salt and lemon juice and water, so perhaps a little lemon juice would also help.
Thank hard: If it is not salt, what else could it be?