Yep, all the time. It is at it's worst when you are doing a lot of heavy cutting of aluminum .030 - .050 DOC with a single point fly cutter. The curly thick chips get all over in the cover and fill up the valleys of the bellows. I have had the way covers jump off the dove tail guides and it is not easy to put them back on. I have a shop vac handy and now during a long part run I will vacume all the chips out whenever the table extends out in either direction. You have to avoid the drill swarf as it will clog the vacume cleaner hose, but milling chips are easy to pick up.
BlueFin CNC LLC
Southern Oregon