So Joseph turned 3 in April. He is outgrowing his Toddler bed and with son #2 due in early September, we wanted to move him into his new room (baby will be taking over his present one).
I made him a bunkbed - using 8 sheets of 1/2" (4x8) 12mm Baltic birch and three 18mm sheets. The drawers and boxes, side rails, matress support panels, etc are all 12mm. The gables are 18mm.
All the cut outs, the side rail and matress panels. etc are all slotted and mortised into one another. The bed locks together and gets bolted with 8 1/4-20 bolts and T nuts. Impossible for anything to come loose.
the 4 steps/drawers and three underneath will give a lot of storage space, since the room is small and not much room for a dresser.
All parts were cut on my buddy - even though the gables and rails are 72" and 76" long.
The three drawers underneath were not yet installed when I snapped the photo with my cellphone.