A downcut bit is the perfect choice for cuts where having a clean top surface. The down cut action of the bit cuts from the surface down ensuring that you have a perfectly clean top edge reducing any fraying or chipout that would be left if you were using an upcut bit for the same cut.

The basic edge-forming bit, the corner-rounding bit rounds an edge to a given radius. The tool is shouldered to cut a fillet. The cut can be used to ease edges, as a simple profile, or as a part of a complex one.