For the 10 years or so that I have been cleaning and shopping games, I always used novus 2 to clean the playfields.. Then I dug around and found an article stating that Novus 2 was not best used for a playfield, but more for plastics.. So I dug and dug.. came across this..
http://www.autogeek.net/sapphire-prewax-cleaner-840.html
Now, I can only speak for the 90's and newer games, as I have used this on 4 machines, and on 4 machines the results have really impressed me..
This stuff goes on like a wax... you rub or buff it in, let it sit and dry to a haze, it is a liquid not a paste.. then wipe it off..
FIrst game I did was Star Wars trilogy with original DULL factory mylar, I put it on the mylar with my drill pad, and did it SLOWLY.. as it will spray everywhere.. Let it sit with a freestanding fan on the playfield.. it hazed over, wiped it off.. and BAM there was shine again! I then buffed it with the drill and buffing pad, put a coat of wax, let it haze again, wiped off and buffed again.. REALLY good results.. did not know if it was this stuff or the playfield was just not that dull as I though.. so I have used it on 3 more games... Maverick, Demo man and JM.. and all 3 times a very nice shine coming off the playfield BEFORE any wax..
I took a shot in the dark with this stuff.. and it really did an amazing job for me so far..4 for 4...
Now I have not done this on an older playfield, so I cannot speak for the results on games from the late 80's and back..
Just figured I would give this tip to all who might be interested.. since the site has really given me a lot in terms of repairs and help and advice..
If you do happen to try it.. Please PM me your results.. I would love to hear if it worked as well for others as it has for me.. and I put the link above where you can get it..
If this is old news and I missed a post about it.. not my intention to post about something that was covered, I had never seen this on RGP or on this site.. so wanted to share with everyone!
Thanks
Steve