under desk laptop or tablet holder / runners / shelf
thingiverse
No support needed as a support for the bridges is included in the stl file already. It is the thin wall (0,8mm) between the left and the right part and the rails (0,2mm by 1,2mm) running across connecting the 3 parts (left, right and support wall) The wall thickness is 2,5mm which seams to be stable enough. The total height is about 24,4mm, the usable one 21mm and the depth 150mm. Mount as wide as needed (with e.g. 3mm spare) The screw holes have a diameter of 5mm. The thing may be resized by cut and copy. Consider to lose a bit of inner height for the laptop in case of bad bridging (but max. 0,5 to 0,7mm).
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