[kingmonkey]

I did a repair for a guy the other day which, I feel turned out to look pretty good. But there was a problem. The ding in his windshield was about nickel sized and had a lot of little cracks in the center, and a lot of black around the edges. The owner of the car informed me that it had been there for at least a year that he could remember, possibly longer. Anyway, I went ahead and did the repair, curing under pressure, and when I was done all of the little cracks in the middle were gone.

However, when I was done there was what I can only say was an outline around the repair. From what I could tell it followed the break nearly exactly. I've seen these before but not nearly as noticeable as on this one. What could have caused this? Did I use too much pressure? Or was it because the break was so big or perhaps a lot of dirt in it?