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- May 21, 2021
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You are correct. Acid should not be used on glass, although I’ve used it before with no issues (never sprayed directly though)
I've seen a lot of people talk about and recommend using wheel acid or other types of acid to clean windows. I'm not saying they're' wrong or they don't know what they are doing, but if they ever publicly recommend to the masses to do like they do - they ought to include some safety recommendations as well as some step-by-step how-to directions. I always do these minimal things.
I grew up detailing cars in Oregon where it rains a lot. I learned right away, when detailing a car, machine polishing the glass was always a part of the job. In Oregon it rains a lot and 99.9% of all daily drivers are goingn to have water spots, drizzle stains and road film on the glass as well as the paint. You cannot do all the paint correction and give back a car with shiny paing but all this crud still on the glass. This also were I developed and implmented the practice of machine polishing the glass BEFORE washing the car. (topical glass polishing). 40+ years later, it's still my practice and what I teach in all my classes.
I have a dewalt rotary buffer, looking forward to trying NSP GL. Will post an update after. Thanks for your recommendation Mike.![]()
Make sure everything is clean.
Mike




