I have a question for you guys. I need help. I purchased some tempered glass, 3′ x 6′ that had come from a building teardown. I am putting it in a sunroom. It has sat outside for a year or more and had fiberglass insulation between each piece to seperate them from each other. It seeems to have done something to the glass in those places it touched. I can feel the etching and see it also. Fingernail does not catch in these places and I have tried the 40030 and it does not seem to do much. Maybe I am not using enough pressure ????
Any good ideas??