It was time to round over the edges on the rudder in preparation for fibreglass cloth.
I used a 1/4" round over cutter in the router, but there were places where it could not reach and they had to be finished by hand.
In this pic the port bottom plate has been rounded over and the curves at the front and rear of the plate marked up in pencil to be finished with a rasp and sandpaper.
Here is the port bottom plate with its finished round over.
So far, so good!