erak Wrote: I just polished my JM play field and now looking at an sharp angle I can see small dimples in the play field too. I think it must be the play field factory hard coat/clear coat.
It almost looks like orange peel texture on a bad car paint job.
If that's what it looks like on your play field it is most likely a factory defect of too much hardener in the clear coat when it was sprayed.
To much hardener could very well be part of the problem along with not enough flow enhancer/fish eye remover and a assembly line mentality to top things off.
The thing about clear coats is that in certain situations the clearcoat will lift causing little tiny bubbles to form giving it a dimpled look. If you have a sheet of Mylar and your getting this affect the adhesive could be releasing giving the same look and effect.
That being said...
A good way to test if you have clear coat play field is to look at a light bulb hole in the play field, if you can see the clear come to a edge then you more likely then not have a sheet of Mylar covering a sticker. If the clear goes down into the hole it is a sprayed on clearcoat.
You can also drag a straight pin from the inside edge of the hole out onto the play field and if you feel a step or little click it's a sheet of Mylar etc....
If you have Mylar and find that the adhesive is indeed lifting you might possibly be able to reactivate the adhesive by starting in the center and heating the play field with a hairdryer and use a small firm paint roller and roll out the Mylar squeezing out the air bubbles. This may or may not work depends on the age, severity of the problem.
The only fix I know of for lifting clear coat is a redo, yea...that one sucks!