We recently filmed a run on one of our CNC setups: a rotary fixture plate holding several metal fan housing components at once, a multi-head machining station working across them, and the usual scatter of metal chips that comes with cutting aluminum or steel. It’s not a dramatic clip. But it’s a useful one for explaining a point that doesn’t come up often enough when people talk about cooling fans: the housing is doing more work than it looks like.<\/p>\n\n\n\n