Just cleaning up my mill from all the aluminium swarf, and the vacuum didn't seem to be sucking very well like it use to. I noticed it quite a while ago, but didnt bother to remedy it, other than emptying the contents and cleaning the filter. But today was worse than usual. Took the hose off, shook it out, some stuff came out. Put a high intensity light in one end, couldnt see anything. I shook and flexed the hose, and more and more stuff came out. No light on the other side. Put a cleaning rod down and was getting stuck. Eventually it came out, and i see this hige tangled mass about 12" from the end. Put a 1lb steel weight down one end and shook the mass out. Vacuum is good as new!