Hi restermer: The Router Workshop was sponsored by Oak-Park. The square base used in the show uses the 1 1/2" brass guides that Oak- Park sells as well as some other systems that can be used with the square base. Asquare base is alot easier and more accurate to use when you are using a straight edge to guide the router when making a cut free hand. If a round base is used and for some reason the bit is not perfectly centered through the plate your cut could go off due to turning the router as you make the cut. Some manufacturers make bases that are round except for one side. It too makes the base easier to use. woodnut65 |