WHY WE NEVER USE POLY TO 'CLEARCOAT' A PLAYFIELD
A while ago I made up 1000000000 SBM center horseshoes because they are ruined on every SBM I've ever seen. (how to do it yourself: https://pinside.com/pinball/forum/topic/making-new-ball-guides-from-scratch-vids-guide ).
Along the way, apparently I lost a bunch of people's emails, because I still have people mad at me because I never took their order, lol.
One gent who lives by the airport said if I could bring him his guide, he'd not only drive me to the airport and let me leave my car in his garage, but also buy me dinner! This sounded like a deal to me.
After years of searching, he finally found a SBM. He had a playfield that he restored years back hung up on the ceiling of his gameroom, so all he needed was his horseshoe and he was ready to restore the game.
Bob: Hey Vid, I restored this playfield about 6 or so years ago, awaiting the day I could find a SBM.
Vid: Nice work.
B: Yeah, but the whole thing turned amber!
V: Old playfields can change color.
B: No, I painted it white during the restoration. That's not 40 year old paint!
B: Do you think that the heat gathered on the ceiling? It gets pretty hot when all the games are on.
V: Games get way hotter inside the cab that the ceiling ever would. Smoke?
V: You cleared it with....?
B: Spray-can poly.
V: Yeah that explains it, that stuff always turns yellow sooner or latter.
B: On RGP that's what everyone said to use.
V: Well, see if you can get a refund from RGP.
B: Can you remove this if I pay you?
V: I've never been able to get that stuff off, without removing the underlying paint too.
B: Is it going to get darker.
V: Yeah, I'm sure it will.
Here is his playfield, fresh from the ceiling: