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.

I've attached the text file. I'm a little nervous going in to the machine manager. It gives you warnings that everything going forward will be affected. But I do believe it's the way to go, I just haven't yet. Leaf Cribbage.txt

I'm cutting a leaf that will be a cribbage board. The leaf contour is made up of many arcs. One of the arcs continued around as a circle on the CNC, however it did not show up on verify operations. I read on a couple other forums that it may have to do with truncating values and seeing the starting point of the arc being the same as the end point. A zero length arc or full circle. I'm looking for a way to prevent this. I don't believe it's very common, but it kinda ruined my project.