Clear plastic side fence for straight work on Combination Router Base. Long length for greater support at beginning and end of cut. The fence can be fitted in three positions on the CRB, bridge end, middle or rod end. Can be fitted both vertically or horizontally to base plate, to suit application. Facility to fit a sacrificial fence for edge profiling (user can notch into sacrificial fence). If two fences fitted the CRB can be used as limited ski attachment for relief carving.