Furnished content.
(from Lumberjocks.com)
My nephews outgrew their previous beds and crib, so I built a pair of beds with storage and a trundle bed under one. I used Douglas fir posts and end rails and select 2×6's for the rails and ends. V groove pine whiteboards made up the end boards for looks and privacy. Poplar made up the bed slats and 1/4 plywood layer on for extra support. Select pine was the wood of choice for the safety rails and sides of the trundle bed. Most of the connection joints are hand made mortise and tenon, and secured with 120 mm bed bolts. I gave every piece 6 coats of shellac and 4 coats of water based furniture polyurethane for protection, and allergy safety. I used mortise and tenons instead of the usual metal brackets for strength and safety. The trundle was an after thought and was well appreciated. It was a fun project to make and put my stamp on.