How Tempered Glass Is Made — And Why It Can Suddenly Explode

How Tempered Glass Is Made — And Why It Can Suddenly Explode Why can tempered glass suddenly explode without being touched? A glass table, shower door, or safety panel can look perfectly normal — then suddenly shatter into thousands of tiny pieces. The answer lies in how tempered glass is made, the invisible stresses locked inside it, and sometimes a microscopic impurity known as a nickel sulfide inclusion. In this video, we explore how glass is made from sand, how molten glass becomes perfectly flat by floating on liquid tin, and how ordinary glass is transformed into stronger tempered safety glass through extreme heating and rapid cooling. You'll discover why tempered glass is stronger than ordinary glass, why it breaks into small pieces instead of dangerous shards, how spontaneous glass breakage can happen, and how manufacturers use heat-soak testing to reduce the risk. We also look at the surprising differences between ordinary glass, tempered glass, chemically strengthened phone glass, and laminated windshield glass. Glass may look simple, but every pane around us is engineered to behave in a very specific way when something goes wrong. Subscribe to Small Things for more hidden science, manufacturing processes, and surprising stories behind everyday objects. #TemperedGlass #HowItsMade #Glass --- Timestamp: 00:00 - Intro - The Table That Broke Itself 00:54 - Glass Starts As Something Ordinary 01:51 - The Liquid Metal That Makes Glass Flat 02:55 - Why Ordinary Glass Is Dangerous 03:47 - How Tempered Glass Is Made 05:42 - Why It Can Explode 07:23 - How Factories Catch The Problem 08:20 - A Small Clue On The Edge 08:57 - Not All Strong Glass Is Strong The Same Way 10:11 - Glass Is Engineered To Fail Safely --- ✨ About Small Things Small Things is created by Sarah, Maez, and Hassan — a small team who loves exploring the hidden stories behind simple things and small things. 🤖 Disclaimer: We may use AI tools to support research and production, but every video is reviewed and edited by our team. We respect copyright, original work, and YouTube’s policies. Thank you for supporting us. 🙏 If you notice any issues, please contact us at agency.scommedia@gmail.com #smallthings #simplethings