I sanded down a few hairline cracks and a few half inch nicks and threw some "bondo 3M Glazing & Spot Putty" then primered it. on my way out to the car the crack opened up and the half inch nick cracked where the bondo was. anyone know of something a lot more flexible then this product because I was told that this was "the good stuff" maybe I could get some fiberglass resin and mix the 2?
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