I am thinking about installing mylar on a playfield. Never done that, but have successfully removed mylar with the canned compressed air/freeze spray method several times. I have read that when installing mylar if you have bubbles or other issues you can pull the mylar up and redo it. Never do these instructions/recommendations state needing heat or freeze spray during any repositioning process. I'm guessing the mylar adhesives cure over time and removal is easy during the first few minutes or so, but not sure. Can someone explain when freeze spray is needed and when it is not when removing/repositioning mylar?

I figured that much. I guess my question is why? Why do you need it to lift mylar if you're going to throw it away, but not need it (or anything else) to lift it and put it back down?

I understand that. I guess I'm still not getting the answer I hoping for....maybe I'm not asking the right question. I'll try again, or maybe someone else can answer my question:

If you use freeze or heat to lift mylar so you don't damage the paint or playfield, then why, when installing mylar, you can put it down, then lift it back up without damaging the paint or playfield without freeze or heat?

So what you are saying is that you put the mylar in warm water for 60 seconds then transfer it onto the playfield? Never heard of that method before!