Viral YouTuber, engineer, and inventor Mark Rober invited engineering students at Brigham Young University to help him make the world’s smallest Nerf gun—and then repeat the process five times over.
After working for the better part of a year to make the smallest Nerf gun, Rober sought to break his own record. According to this calculation, you’d be able to fit five of the smallest Nerf guns across the width of a single hair.
Rober then goes over how they made their original gun and the struggles they faced. At the heart of the struggles were the 87 parts, 13 springs, and 6 hinges. It would be impossible to shrink these parts down to human hair size. So, they set out to make a small Nerf gun made from only one part with no springs.
“As it turns out, there’s only one place in the world that leads the research in creating really tiny, bendable machines from a single part,” he relates in the video. “And it also just happens to be where I got my undergrad in mechanical engineering. Which meant it was time for me to head back to my alma mater, BYU, to visit some old friends.”
Rober worked with a team of professors and students on the project. Watch the full video below!