[gtobird]

My 68 Firebird has the original tinted power window bird glass. They have scratches and some tiny pits that look like they are from welding. I've polished glass before and understand the limitations and issues with the glass getting wavy if you polish just the damaged area.

I haven't yet tried to fill the defects, but it seems to me there should be something out there that you can fill these scratches with so you don't have to cut so deep into the glass when polishing. Since smaller windshield defects can be filled with resin, I'm wondering if any of those fillers would work.

There are a number of glass glues out there that aren't fillers and appear to be anerobic compounds which cure in the absence of air (like super glue). Since the windows are out of the car, I could lay them flat, fill the scratches with that glue and then possibly lay something like plastic wrap on them to get it to cure. After that, polish them flush.

Short of filling in the defects or replacing the glass, I do have some of the expensive glass sanding discs that are meant to grind the larger surface before polishing. I'd only go that route if no other options are possible.

This will probably be a science experiment as I'll try it on some junk glass first. I'm open for suggestions.