How Millions of Circuit Boards Are Made

They're inside every device you own — your phone, your laptop, your car — yet almost no one knows how they're actually made. From a bitter WWII secret weapon to factories churning out billions a year, here's the complete story of the printed circuit board: etched in copper, drilled by lasers, coated in green, and finished with real gold. ⏱ CHAPTERS 0:00 Intro 0:56 A Wartime Breakthrough 1:56 What Is a Circuit Board? 2:56 It Starts With a Design 3:47 The Raw Board 4:42 Printing the Circuit 5:35 Etching Away the Copper 6:35 Building the Layers 7:30 Drilling the Holes 8:25 Plating the Connections 9:19 The Green Coat 10:18 A Touch of Gold 11:11 Bringing It to Life 12:10 Testing & Final Facts 👍 Enjoyed this? Subscribe — we break down how everyday things are made every week. 💬 Comment below: which product should we cover next? Stock footage: Pexels (pexels.com) how circuit boards are made, pcb manufacturing, printed circuit board, how its made, circuit board factory, pcb assembly, electronics manufacturing, how pcbs are made, soldering, etching copper, pick and place, paul eisler, how electronics are made, circuit board process, pcb factory