Harbor Freight sells a 2 HP dust collector that it very powerful. (4" diameter hose) however, the hose connects directly to the blower unit, which means large chunks will get caught up in the fan and possibly even damage the blades. So I went to Highland Woodworking in Atlanta, and bought a cyclone unit. It works GREAT! All it consists of, is a lid which fits a standard 30 gallon trash can which features a groove with a gasket to seat onto the trash can, an input and output hose port, and a 90 degree elbow which fastens to one of the two ports on the INSIDE of the lid. This directs the airflow into the curvature of the inside of the trash can to create the cylone effect. The output port is just aiming straight up, where you connect the hose going to the blower. Works great! Although large curls (such as from cutting oak) sometimes does clog up in the 90 degree elbow. It's a lot easier to just lift the lid off a trash can and empty it, than it is to fiddle with the giant hose clamp used to hold the plastic bad on the dust collector itself! Highly recommended system!