yeah, i've made some. i wouldn't use dowels, as the joint is what
keeps it from racking. i've used a lap joint, but double bisquits
would proably work. main thing is to have wood that behaves and stays
flat. 11/16 cedar is a little light duty, too. 5/4 would be better.
nice to have some wider material for the rails---that will help with
strength too.