Align the curved sections, clamp.
Keep them at a right angle!
Last time I used brads to keep the sections aligned. I think I like hearing the satisfying sound of that pneumatic nailer too much. Anyway, that idea didn’t work so well when I had to trim the sections or cut a new screw pocket.
In the foreground is a little painting pad. It really saves time in spreading an even coat of glue. I wrap it with plastic wrap when it’s not in use.
-- "The unexpected, when it happens, generally happens when you least expect it."