Quoted from 85vett:Also this part I don't understand -
"Glass for museums needs different specs than for pinball where the glass is elevated."
The following video shows the difference between 4 different glass samples with different color and coating properties.
The first sample on the left is a regular green float glass and you can see that when it's elevated that there is no color shift (green tint).
This might be the reason why the OP stated that PDI glass has a color shift. In a picture frame (museum) YES, on a pinball machine NO.
Quoted from 85vett:I guess I just have a hard time comprehending why so many say this guy can't get this done when we already know it's possible (I.E. invisiglass and PDI glass). If it wasn't possible we wouldn't have those products.
There are some slight differences if you coat glass and yes, it can be done but with different results.
The following chart shows the technical part and the video the practical.
PBGLASS.JPG
Thank you Mr68 for volunteering and for helping those who don't know the products yet to build their opinion based on a trustworthy source.