Story...I bought my car with a rock chip in the top driver side of my windshield about 0.7 of an inch in diameter. Trying to fix things myself where I can, I was introduced to this "professional" windshield repair kit:
There were 2 at advanced auto parts, one was $6 this one was $11 so I bought this one. This turned out to be a big mistake.
I got to this step:
I followed instructions to the letter. After I put the resin in the tube that's on my windshield and put in the syringe, which I pulled up as shown (and instructed) and locked it in place, I sat in my car and looked up at the top of the windshield and here's what I saw:
It looks like my windshield couldn't handle the pressure that this syringe made and there was a crack formed about 6 inches long at the time I noticed it.
I immediately removed the syringe, but it was too late. (The instructions say hold the syringe in the position above for 10 Minutes.) I pulled it out within one minute. By the time I went upstairs to get my camera and take some pics, the crack expanded to 10 inches long. 3 days later now, the crack has expanded to half way through my windshield and bothers me while driving.
Here's what it looks like from the outside:
(before I used this product it was just the rock chip and now you can see it's a lot worse)
SUMMARY: I followed all the instructions and this kit actually ruined my windshield to the point of me actually needing a new one now. The damage this kit caused is the long expanding crack has expanded halfway through my windshield now, 3 days later.
I will need a new windshield now. I have searched online and people say this thing doesn't work, but no one has complained of it actually destroying their windshield.
There is no disclaimer on the box or warning that this may break the windshield. I am going to call them tomorrow to see if they will stand by their product and help me in any way.
Does anyone have any advice?

There were 2 at advanced auto parts, one was $6 this one was $11 so I bought this one. This turned out to be a big mistake.
I got to this step:

I followed instructions to the letter. After I put the resin in the tube that's on my windshield and put in the syringe, which I pulled up as shown (and instructed) and locked it in place, I sat in my car and looked up at the top of the windshield and here's what I saw:

It looks like my windshield couldn't handle the pressure that this syringe made and there was a crack formed about 6 inches long at the time I noticed it.
I immediately removed the syringe, but it was too late. (The instructions say hold the syringe in the position above for 10 Minutes.) I pulled it out within one minute. By the time I went upstairs to get my camera and take some pics, the crack expanded to 10 inches long. 3 days later now, the crack has expanded to half way through my windshield and bothers me while driving.
Here's what it looks like from the outside:
(before I used this product it was just the rock chip and now you can see it's a lot worse)

SUMMARY: I followed all the instructions and this kit actually ruined my windshield to the point of me actually needing a new one now. The damage this kit caused is the long expanding crack has expanded halfway through my windshield now, 3 days later.
I will need a new windshield now. I have searched online and people say this thing doesn't work, but no one has complained of it actually destroying their windshield.
There is no disclaimer on the box or warning that this may break the windshield. I am going to call them tomorrow to see if they will stand by their product and help me in any way.
Does anyone have any advice?