JohnZ3MC said:You'll be happy with that kit, it'll do many, many windshields over the years. Future waterspots a problem? No more with that kit.
I guess the two biggest tips I can offer is to not give up too early, and don't let the slurry dry out on the windshield. When it gets nearly dry, stop, inspect your progress, and add more slurry.
Heat builds up when it's dry and you don't want your glass to get really hot.
Let us know how it turns out.
-John C.
I just did a 6"x6" (TESTING) with a green polish pad and rotary buffer 1600 rpm for about 90 seconds. It reduce a lot of the scratches (80% improve).
If anyone one want to try it, be perpare the big mess from the slurry flying all direction. Cover the paint area if possible. And make sure wash the car with a lot of shampoo after the job.
Will continue the rest next week.