Originally Posted by Ed-Sommers
When I get a "ding", I immediately paint it over with clear nail polish. Haven't had one "spider" since starting that practice!
As a past owner of a windshield repair business, I assure others that Ed has been lucky. Surely he will continue using nail polish, I strongly suggest others not to do that. Nail polish, super glue, etc. (I have seen them all) has no strength in this application. It does not penetrate the entire break, but does block passageways for doing a proper repair later on. If you want to do anything, place a piece of clear tape over the break until a repair can be made. This will keep dirt and moisture out. Moisture can usually be removed later, dirt can not.
There has been discussion prior about "seeing" the damage after a repair has been made. With a good repair, damage will become much less visible, but will never completely disappear. Windshield resin is not glass and therefore does not refract light the same as glass. Some repairs, like bullseye chips, can become almost invisible to the naked eye when fixed. Using a quality resin, filling the entire break with pressure and vacuum cycles, curing the resin properly, should result in a repair that never gets larger and "saves" the glass.
Like many other things...... windshield repair materials and training has gotten much better over the years. If you get a tech that has taken advantage of both you can feel comfortable getting your windshield repaired.