My windshield had a small crack after Safelite came and fixed it. The resin actually leaked and there was a small hole where they fixed it. I bought a cheap bridge and stuck it in the hole. Let it dry in the sun for 20 minutes and then use a curing tab to smooth it out. The crack has disappeared and the hole is absolutely smooth. A small mark from the drill is all that can be seen but not felt. Also used it to fill in some chips.