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well i had to sharpen and make it thinner and it only worked in a straight line then i had to still use the utility knife and a sharpened putty knife i was really paranoid about breaking a 35 yr old winshield but after lets just say a few hours i got the front one out i started trimming the back windows sealer but will finish tomorrow. stefan it finally got into the 50s up here thats why i decided to finally try it i dont have heat in that barn i should of put this in my resto thread its on my 73. thanks cp i did take my time and it went pretty good.
I broke mine using that tool.