Join Date: Jul 2008
Location: Dickinson, Tx. / Somerville, TX
First off, I would ditch the idea of Dowels. I would use mortise and tenons to join the frames.
I also agree 100% on through tenons for the legs
Also, I Would not set the frame joint directly on top of the leg joints. I would set the leg tenons a few inches back on the long bed rails.
Retired woodworker, amongst other things, Sold full time cruising boat and now full time cruising in RV. Currently in Somerville, Tx