An easy way to cut stopped chamfers
A simple shop-made gauge helps you set stops for routed chamfers quickly and accurately. To make one, set up your router with a 45° piloted chamfer bit. Then, rout a chamfer 3" to 4" along the edge of a piece of scrapwood, marking the edge of the router base on the piece at your starting point.
To set a stop with the gauge, place the end of the chamfer on your test piece against the endpoint of the chamfer on the workpiece. Transfer the router-edge mark to the workpiece; clamp the stop there.
—from the WOOD® shop