The cheeks of the rudder are made from two pieces of 9mm ply on each side, glued together to make a chunky 18mm cheek.
In the build manual they are installed all at once, and then a router is used to chamfer the edges.
I could not see how I could chamfer the cheeks where they are flush against the rudder blade, so I decided to make and chamfer them before installation.
The first step is to glue the parts together, to make the two cheeks.
Here is one cheek, clamped up and curing.
That's it for now!