Making Sense of Louver Punching in Metal Work
If you've ever looked at a metal cabinet or a generator housing and wondered how those slanted vents are made, you're looking at the result of louver punching. It's one of those metalworking techniques that feels like a bit of a magic trick when you first see it in action. You aren't just cutting a hole in a sheet of metal; you're slicing it and forming it at the same time, creating a raised "eyebrow" that allows air to move through while keeping rain, dust, or prying eyes out. ...