I need to run a cutter down the edge of a 700mm wide x 40mm thick worktop to clean it up and get it square so I can joint up an extension piece. I clamped a guide rail onto the worktop but because there is only a relatively small amount of the router base on the top of the worktop, there is a tendency for it to tilt slightly sometimes as I move it along. I'd thought about making a slightly larger base for it but given the weight of the router I'm not sure how effective it will be.
Any suggestions?