I remixed Ya Ikou!'s great design, to increase the height over the desk. I also designed small stabilizing brackets that will prevent the shelf from swaying at the higher height.
This thing just about completely fills the bed on an Ender 3 printer. No point in adding a skirt or brim, as it'll be off the edge of the print bed. I added some small brims to the lower corners, to prevent the corners from lifting up during the print.
I printed with 0.28mm resolution, with 3 walls, 3 top and bottom layers, and 10% infill. Slowing down the part cooling, so it doesn't kick in full blast until layer 50 or so, also helped with preventing lift of the corners.
The braces can be placed into the bracket, then slide the Burhult shelf. You can also place them on the bottom of the shelf.
The author remixed this model.
I took the source model and increased the height of the stand, so it stands higher off the desk. I also designed small stabilizing braces that help prevent the shelf from wobbling.