The Rockler Circle Cutting Jig (item number 40982) can be adjusted to cut circles ranging from 5-1/2″ to 52″ in diameter. Pre-drilled countersunk mounting screw holes and assorted hardware attach within seconds to a variety of popular routers, no math required. Position at least one of the two included pivot pins (you use the other one when the design allows for drilling a center hole) along the recessed groove to find the exact diameter needed, then anchor with the included T-bolt. The Circle Cutting Jig will cut circles, arcs or arched moldings. It’s priced at $39.99.
