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Saturday 12 May 2018 at 08:53
I installed a clear coated(2pac automotive) T2 nos playfield around 2 years ago. It was unused and It now has dimples. Nothing like the Bm66 pictures I’ve seen but they are there.
Source: http://pinside.com/pinball/forum/topic/steve-ritchie-discusses-pinball-playfield-dimpling/page/14#post-4393808