Dealing with small breaks

[Glasseye]

Did a repair yesterday on a small crack with impact point at centre. The crack was no longer than 3/16" (4mm) but when I commenced the repair it shot off to a 2" crack (50mm). Any advice on this one. It was a fresh break ( no more than 2 hours old) with no contamination and glass temperature was within range at 13 C.

[Mike Allen]

Patience and gentleness are very key components to repair. It has been my experience that if I rush the repair or use too much pressure(which I used to do when rushing) that I would have more problems.

However, this is not always true. I have had cracks run on me when I am gentle and slow. One of my repairs from yesterday was a good example. It was a 2005 Chevy with an OEM windshield that I got to in about 3 hours. I was flexing one of the multiple legs and another one opened up about an inch. No sweat though, it filled as fast as it opened. But while ensuring that it was filled properly the leg next to it spread a little. Getting further away from the injector, and having about 7 1 - 2 inch legs, I was loosing some injector pressure. So I went with light pressure and mucho patience and it was still walking away. I was really trying to avoid drilling and finally did so. It only spread about another inch alltogether and was repaired perfectly.

I have also done repairs on aftermarket windshields, namely SGC (Safelite) where it will run as soon as you touch it. From what has been explaind to me on here, is that some aftermarket windshield aren't installed correctly and as a result have added stresses applied to them. With the added stress from incorrect installation or shoddy windshield manufacturing it makes repair difficult. So you can encounter problems from these as well.

[ClearView WRS]

98% of the chips that have ran on me, were the smallest chips you can find, and they usually have 2 legs extending from the impact point. That

[Delta Kits]

[quote="ClearView WRS"]We were told in training to turn the injector about 1

[GlasWeldTech]

I use an 1/8 th to a 1/4 turn after seal contacts glass. No problems here.