I designed this model so I can organize my server cabinet. It was designed with the intention of using a thick 6mm cardboard that is inserted in a slot for the shelf and just to 3d print the legs. The legs have ventilation holes so the equipment is kept cool.

After a month the cardboard started to bed so I replaced it with 3mm glass and padding foam.

Because the legs just slot on as long as the cardboard is thin enough to ston in you can make the shelf as big or as small as you want.

I printed it in PLA, 5% Infill, 2 perimeters and it is plenty strong. Every leg is about 30 meters of filament.

.f3d file is provided so you can change it if you need to.