I’m working on a Black Pyramid playfield that had some wear and planking outside the mylar, and the mylar was in good shape but it was dulled and hazy. I knew removing it was probably an option with the possibility of lifting the artwork on the inserts, but I wanted to at least try to see if I could sand it and polish before dealing with trying to remove it.

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I ordered the Hex polishing pads (cutting, medium and buffing), loaded up 1500 wet sandpaper on the random orbital and sanded the mylar around the pops. Then I polished it out with the three pads. To my surprise it polished out nicely.
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I wanted to protect the areas outside the Mylar with Verathane, so I sanded the entire mylar surface, then carefully masked it all off. I then laid down several coats of Verathane.
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I’ve removed the masking from the mylar and now I’m headed off to the lake for a week while the Verathane cures. When I return I’ll sand the entire PF smooth then polish it all out as one. Hopefully it will turn out nice and last for many plays at the arcade.
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I’ll post the results here when I get it all done.

Just returned from a week of vacation and did a wet sand with 1500 (sanded both Mylar and Verathane) then polished the entire thing out. I’m satisfied with the results.

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Yes. It’s a Tack Life random orbit sander. Amazon, $40.

A few final photos of BP-
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