Don't check the sound.. 😭

追加: 2026-06-03

[00:00:00]This solid metal is flash frozen to minus 80° just to force it into a hole that's physically too small. In engineering, this is called an interference fit. The pin is intentionally oversized to guarantee zero wobble under extreme stress. But there's a catch. Once the frozen metal starts warming up, it rapidly expands and seizes instantly. Look at this. Two failed attempts hammered completely solid. So when the freezing alone isn't enough, they bring out the fire torch, heating the joint until it glows bright red to expand the hole itself. And the second everything finally lines up, the massive pin slides in flawlessly.