I made a desk for my daughter's IKEA Lo loft bed. It was her idea to make the desk under the bed, as she likes sleeping high. It also makes good use of the space in the small room.
The desk is height adjustable and if the ladder ever changes to the right side, the desk can be flipped over as well.
Actually most of the work was figuring out the design and the dimensions.
This is no instructable with detailed directions, but should give a good impression of the project and steps required. I didn't plan this to be an instructable, otherwise I'd have taken some more pictures: sorry!
Tools: Circular saw, jigsaw, biscuit joint machine, router w. various bits.
Materials: 2 MDF sheets, some 22mm thick whitewood, 2 sheets of HPL laminate, baltic birch plywood 18mm thick, Rampa nuts, biscuits, glue.
This was a fun project and not too much work, I'm pretty pleased how it turned out.
I suppose the whole project could be done without some of the machines I have (router, Lamello) if a circular saw, jigsaw and a lot of sandpaper is available. The core could be painted instead of glueing on laminate, saving some money as well.
Step 1: Making the Core.
To make the desk rigid but not too heavy I made a cheap hollow core from two 6mm MDF sheets and some whitewood. Making the core was pretty straightforward. I marked the rough dimensions on the MDF and glued on some whitewood 22x48mm. This didn't need to be precise as I cut the core to exact dimensions with the circular saw after it was all glued up. Just make sure the core is a bit oversized to have a nice edge after sawing to final size.
When the bottom was ready I glued on the top MDF sheet: some crates of beer came in handy as weights ;-) The curves I routed with a template and a bearing guided bit.