I was using it to collect dust from a DeWalt plunge router (A very nice machine, I have about ten routers), and the vacuum crapped out but the router continued to run, so I didn't really take notice until the cloud of dust overtook me. What happened was the plastic tube from the router got clogged at the angle (about 80 degrees I'd guess), and I didn't notice it in time. I assume the vacuum motor overheated, but really? On a machine that costs as much as all Festools do, you would think there would be some overload protection to prevent this kind of thing, wouldn't you?