The cartridge door flap on a friend's Nintendo broke and she needed a replacement. We tried another Thingiverse model, the Nintendo NES Flip Top Lid, but it was a little ill-fitting and the pegs were fragile and not quite correct. I took my calipers to what was left of the broken door and came up with this OpenSCAD model. I've also provided the OpenSCAD source file I used to generate this model. Version History: Download and print. For better sturdiness, use a couple of extra shells and a fairly solid infill.