The reason that cracks often start on the edges of the automobile windshield chip repair is because the edges are the structurally weakest area. The frit is on the glass because it keeps the ultraviolet light from the sun away from the polyurethane seal that holds the windshield in the frame. Without the frit, the windshield would quickly start leaking or just pop out of the frame of the car.
First things first the chip should be repaired before it gets filled with grit. To do this, the chip needs to be drilled while the cracks in it get vacuumed. An acrylic or crystalene resin is then inserted via syringe into the chip to restore the air trapped in the crack. Afterwards it is dried with UV light which hardens the substance and reinstates the original state of the glass. Acrylic resin is made up of carcinogenic acid which turns the chips yellow over time. Crystalene resin has better clarity and doesn't change color over time. It's available at ultra-low consistency and high consistency. Extra resin is scraped away and then polished for a finishing touch. This kind of treatment usually runs about $45-$100.
Many of us may not be concerned with all the small details that go into windshield repair, but those trained to do the job know that missing a detail can be fatal. The purpose of the windshield is not just so you can see. There are other very important functions like keeping the car roof from caving in on you if you have a rollover; or, protecting you in a serious accident. It helps the airbags deploy properly as well.
If you have insurance that will cover windshield repair with a low deductible, this may be a good option. Many companies that specialize in windshield repair will pay the deductible for you provided it's under $100. If you call ahead to make an appointment most of these companies can replace the windshield in less than an hour. If you don't make an appointment, you may have to wait a few hours if there are many customers in front of you.
#3) Non-Complicated Equipment! It seems as though just about every company is trying to come up with another gimmick (bells & whistles) to add to their repair system. But, by over complicating the process they are making it difficult for new repair techs to get the hang of the repair process.
While there are many things that can go without fixing for a while these are just a few of the issues that should be addressed as soon as they arise. This type of automobile repair is crucial to keep vital systems running. So remember you may be able to make a couple hundred more miles with those worn out windshield wipers but when your tread runs low, or your windshield gets dinged get it to a mechanic right away.