Quoted from seeburg220:
I just finished reading this guy's directions (below link), on applying an overlay. He used the water/soap method, but did not clear coat the overlay afterwards. However, his directions on overlay prep seemed good: Sand playfield, apply polyurethane. Wait at least two weeks, then apply the overlay.
Honestly though, after reading every post on this thread, I'm not sold on the water/soap method of applying it. I'm going to be doing one of these next month, so I will keep on reading until then. Thanks for starting this thread.
I can't really get my PF done with autoclear so I am thinking of trying the polyurethane method after sanding and then using a https://www.playfield-protectors.com/ on top of the overlay... anyone tried that route?