Router-bit drip edges
You can use a dovetail router bit to shape a drip edge that’s just right for all sorts of situations. For example, to protect a square post base against end-grain rot I used one of these bits to cut the drip edge shown in the drawing. The angle cut by a dovetail bit is steep enough to shed water, but shallow enough to be strong. When I cut a drip edge on a post, I allow some offset between the bottom of the post and the drip edge. This allows me to insert any shims without dinging the edge.
Emanuel Jannasch, Chester, None