reduced version from this thing:314836 removed the vents channels . Update: I just made a better thing: the pcb exposure /picture frame look here: http://www.thingiverse.com/thing:503299 old version: http://www.thingiverse.com/thing:501886 Please head over here to the improved version: http://www.thingiverse.com/thing:498812 Update: Thing renamed to match the original description Taken from the original description: "A shelf that can attached to a clamshell laptop or to an electronics rack and into which a 3 by 4 by 3/8 inch (76.2 by 101.6 by 9.525mm) microcontroller stand (such as the Raspberry Pi Stand) can be inserted." . My fault, I have missed this is not for the Rasberry pcb itself (60mm wide). The attached stl-file (same dimensions as the original) has the slide in about 78mm wide at the bottomplate . You may make your own version or take them from freshly made files. -mountplate for pcb 90x100mm -mountplate for pcb 90x100mm with cutout -mountplate for pcb 90x80mm -mountplate for pcb 90x80mm with cutout -mountplate for pcb 90x60mm -mountplate for pcb 90x60mm with cutout not yet printed. Made with Tinkercad.Hint: if you have printed already, as I did with wrong size. Depends on what you want to put in. -if to big: make an intermediate board. -if to small: cut off the bottomplate and mount the outer parts (have no name for this) with screws onto a new plate. This plate has not nessisarilly to be printed. Plywood ,acrylic plate or a metalsheet is suitable too. Even a cardboard will do the job for a while. When you put slotted holes in the new bottomplate this thing will give you a universal adjustable pcb holder. Not to bad.