Quoted from vicjw66:
You got one with bad wood. I’ve never seen a TZ look as bad as yours. I did the same thing with mine and buffed it to a fine shine with Novus 2 and 1 and there were no dimples on it at all. Certainly some of those old Bally/Williams playfields had dimpling, but relatively few and the dimpling usually wasn’t too bad.
The point was what people think they see... isn't always what they think it is. The PF didn't look dimpled at all before refinishing the surface. It's only when sanding it were the actual individual ball impressions made visible. The idea of 'the entire PF gets beat down' I don't subscribe to, but sanding shows how the PF is not perfectly flat and you likely have a lot more shallow marks all over.
When you look at the PF before.. it looks dirty and dull, but nothing jumps out as 'DIMPLES!'
But when you get just the right reflections... you an pickout the surface isn't really perfectly flat
And when you compare against more virgin areas.. you can see just how much abuse the topcoat really had taken (look at the mini-flipper area near the orange/yellow lines)
When the PF is glossy and otherwise flat on a new pf... the individual ball marks stick out like a sore thumb.