I don’t plan on trying it but it looks like it was heated on the side.
Here’s the whole process, “Cd Bubbles”:
and
http://www.youtube.com/watch?v=PjDKHycQg68
and
http://www.youtube.com/watch?v=64HcqPhrSYE
Some scraping prep work. Use a LOT of Bic lighters! Bunsen burner would work better. Just so melted CD plastic doesn’t drip on hand below...
I’ll pass, thankyouverymuch.