If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension: % o& ]" A/ a: J a, y, f M) a" b' e/ P
(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot# m2 \: K1 C5 U5 ?. g! _7 s
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(2) To buy a round or square think-glass-disk with diameter or side length of 1 inch. If you can't find it, you can go 99 cents stores or dollartree to buy a large-clear-cloth-button at similar size.) Y/ d6 W! W0 s4 u( k& P: B
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(3) Prepare Epoxy well, spread the paste to one side of the glass or button, attach it to the crack-upper-end from inside of windshield. Wait for 24 hrs. It'll be as solid as a rock and permanently stop the crack extension.