Generally automobile windshield chip repair grow into cracks very quickly. Not taking the vehicle in to get it repaired immediately can result in a crack that is too wide to repair.
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.
Driving the car immediately after a windshield repair is not something you can do. There is a time period that should be allowed to make sure that the window has settled and dried. The warmer weather allows for the adhesives to dry quickly. However, the colder weather increases the time that is needed before you resume driving. Taking the time to wait for the adhesives to be at full strength could mean the difference between life and death or an accident that leaves you maimed.
If your windshield is cracked or chipped you need to get windshield repair. Most times people think they will need to replace the whole windshield. However if you get the repair completed soon after the crack or chip occurred, it can easily be repaired. It really takes no time for a repair specialist to repair, and sometimes auto body shops offer a mobile service where they will come to you and repair your windshield. As for cost, it is affordable, and most times your car insurance provider will pay for most of or the entire repair.
The hole in the adhesive disc should be pushed out and the paper backing has to be peeled off. The disc has to be centered over the area proposed to be repaired, press it on the windshield using a tab present on the disc facing upwards.
There are certain scratches that are advisable to be removed by buffing. If the scratch is too deep however, it is best to use resin to cover up the scratch. The rest of the window will be protected from further damage if the spider cracks are stopped in time.