Quoted from Crrispy:Hi, I have a Mirco playfield in my AFM. It dried for almost 1 year before the swap. After a few plays, I got "golf ball" impacts in the clearcoat everywhere. I've put new mylar all over it, almost invisible, and it's much better now. And given the thickness of clearcoat, including on the inserts, I can remove the mylar whenever I want without any damage.
You cannot stop dimples, period. Metal vs wood = metal wins, every time