Science, Tech, Math › Science How To Blow an Unpoppable CD Bubble Bubbles from Ordinary CDs Share Flipboard Email Print Because it's plastic, the bubble formed from a CD is virtually unpoppable. You can make the bubble small like this or blow a giant polymer bubble. Anne Helmenstine Science Chemistry Projects & Experiments Basics Chemical Laws Molecules Periodic Table Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated March 06, 2017 Ready for some fun with the old CDs you have sitting around the house? You can make giant unpoppable bubbles from them. CD Bubble Materials CD (blank, used, audio, digital... makes no difference)lighterknife or any hard edge Procedure Use a blade or fingernail to scrape away the metal film on the labelled side of the CD. You don't need to scrape the top of the entire CD -- just a couple of centimeters.Apply a flame to the cleared area. It doesn't matter which side of the CD you heat.Continue heating the plastic until it starts to look shiny, like a puddle.Blow forcefully into the molten area to form a bubble. Don't touch the hot area with your lips or fingers! Depending on how well you liquefied the plastic and how hard you blew, you'll either get a small rounded bubble, a giant bubble extending several feet, or somewhere in between.