Quoted from Scrimmbo:
Got our jurassic park pro swapped out of a location recently after being there for about 2 years. Cleaning things up and found this under the slingshot star posts. I knew we had some bubbling around some posts here and there, but goddamn. What do yall think I should do to keep this from getting worse. I was thinking clear nail polish or something.
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I’m dealing with a similar issue though not nearly as big of a chip. Here is what I am planning on doing (others with more experience please let me know if you strongly disagree).
First if you still have pooling in the area I would use Yelobirds ironing method to flatten the clear. https://pinside.com/pinball/forum/topic/diy-playfield-post-repair-and-chip-proofing-how-to-all-brands
Then I would use some thin CA glue (superglue) under/on the edge of the chip
Once the glue dries I would apply a layer of clear nail polish to the area
Once that dries I would use acrylic markers to try and paint fill the area as best you can
Then I would add another layer of clear nail polish
Finally I would cut and place a Mylar ring on that post that is larger enough to cover the chipped area
I would probably only resort to using a washer ring over the chip if the chip is so far away from the post where the ball rolls directly over it