Am I the only other one crazy enough to give this a try? I was probably a bit more impatient than the OP, but it came out okay.
My window is now much clearer and I'm happy with the results. I could've sanded the perimeter a bit better, but it's clear at the lower pf loops where the ball rolls. It's not perfect, but it is an immense improvement from the cloudy window that was there before.
If I were to do it again, I would only use the random orbital sander to polish. I'd sand by hand, and polish with Novus 2 using the power orbital tool. During the process, I didn't fully understand that the window will NEVER be clear during any of the sanding, even after the final 3000. It only became crystal clear when I power polished with Novus 2 after the 3000 grit (2nd pic). I had practically given up in frustration before I realized it actually worked. I thought I had permanently ruined it until the very end. It was a stressful experience.
(I applied the Pro Helen decal to the lower pf, which has a "broken glass" effect showing fake shards of broken glass which is an intentional artistic effect, and not cloudy.)
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