Hello Vexedwaffle :wave: and welcome to the forum! :welcome:
(I am laughing at that name and wondering if there is a story behind it.)
I have had great success recently in restoring several of my old castle sets, which had darkened and yellowed over 25 years. Can I ask what you are looking to restore on your own sets?
During multiplayer matches I used to say the same tag line taken from and adjusted for waffles from Winston Churchill. "We shall fight them in toaster, on the plate and on the fork. We shall never surrender!"