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I have not been formally trained in the CNC arts, learning as I go. Our CNC has a dust hood that comes down around the spindle (M93) and a little farther (M94) and is retracted (M95). Drilling and facing operations, the dust hood works great. Gives us a nice clean surface. But when cutting contours, the dust hood is inactive. There is a button for it and it doesn't work either (in these operations). I've looked at the G-code and I don't see anything different between the operations. I've inserted M93's, but there's something else I'm missing. Any help is greatly appreciated. It would be nice to keep the bigold machine kinda clean. Thanks.