M-Power CRB7 Combination Router Base
M-Power Tools offers an aftermarket router base that offers a number of features at the very reasonable price of about $90. It can be mounted to any router that has 5/16″-diameter edge-guide holes spaced between 35/64″and 51/8″.
One key feature is an indexed micro-adjusting wheel that lets you dial in the router bit to a measurement or layout line – it’s particularly useful when routing dados or grooves in combination with a guide rail or circle-cutting jig.
And speaking of cutting circles, the base comes with a pivot pin and pre-drilled holes for cutting circles as small as 3/4″ and up to nearly 9″ in diameter.