Disconnected Ding

[Daveycrewcut]

It appears to be a half moon in one picture and a partially repaired bullseye in a second picture. Some techs go overboard when applying heat. Since glass expands when heated, cracks will close tighter. When the original break was overheated, it probably looked like it was full of resin. However, when the customer drives away and the windshield cools down, the glass contracts and reveals the air pocket. Haste makes waste. Had the glass cooled while the injector was still on the break, the void would have filled with resin as it contracted.
You can use a rag or paper towel soaked with glass cleaner or alcohol to help cool the glass back down quicker.
Since the original break was most likely a bullseye, it would have been best to drill directly into the air pocket either all the way to the plastic interlayer or just shy of it and then "crunch" through with the drill bit while the drill wasn't running or with a sharp tool like a sewing needle.
Glasstarz was right! never drill the pit of a bullseye except maybe right at the very surface to help open a passage way.

[wilz]

However, when the customer drives away and the windshield cools down, the glass contracts and reveals the air pocket. Haste makes waste. Had the glass cooled while the injector was still on the break, the void would have filled with resin as it contracted.

by Daveycrewcut.

No offense brother. A you hinting that most windshield techs keep the windshield under heat at all times during the vac and pressure cycles and the windshield is allowed to cool when the repair process is completed?

[toab]

This is a pretty straight forward repair.Unfortunatly it's 2 repairs for one repair price.The direct and the indirect damage.

[screenman]

DaveM the air pockets are not connected to the pit.

Staruest, I cannot see where he says it has been repaired before please copy and paste for me. I can only see where he says it was not repaired before.

Daveycrewcut, the ring in the second picture was put there for illustraion purposes, to show that he new what a partially filled bullseye would look like.

Also I would suggest judging by the whiteness of the pit it was quite a new break. If it had been previously filled it would appear a slightly duller colour.

[Dave M]

Screenman.
I'm not sure why you answered me regarding the air pockets not connected to pit! I never asked about that. Looking at the diagram that would appear to be obvious unless moisture is present.
All of us can and will give our opinions according to what we have seen or experienced. None of us can look at a picture or diagram and state that THIS is the problem and THIS is how to remedy that problem. We give our varied opinions and solutions according to our knowledge and "vast" experience. That being said.......do what works for you! (popular phrase in this business)
A lot of us have said that this business is not brain surgery and I would agree. But what other business can have so many different solutions to what would appear to be simple problems!

[screenman]

DaveM, Sorry I must have misread your earlier post I thought you said it had moisture in it.

I see this repair as pit and a couple of disconnected legs, with no connection between the pit and the legs. This meaning there would be no way for moisture to get to them. Do what works for you is a phrase I have posted many many times.

Again another phrase I would use is if in doubt dry it out.

Personaly I think I can look at an excellent diagram like this and make a good assumption of what is required to repair it. If I could not I would not consider myself a trainer.

[johnnyone]

This is what I call a radial break. The impact from the rock is in the center which pushed the glass in causing the radial break. The one you are showing is a small one and is reparable.