That is an interesting find Rob, thanks for sharing. I think my DA on speed setting 4 spins a little higher than what this recommends. I don't think I stayed in one spot for more than 5 seconds, I kept the DA moving slowly. Good tip on marking scratches on the inside of the glass.
I was very skeptical that this would even work, but that is no longer the case.
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Joe
1969 Camaro
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