Compact computer mATX case for 3D printing. The parts are connected using M4 bolts with a length of 10 to 20 mm and M4 nuts. The nuts are inserted into the grooves of the side walls of Side.stl and MainBoardPlate.stl. On the Side.stl wall of MainBoardPlate.stl, a mATX motherboard with dimensions of no more than 194mm by 244mm is fixed. Assembly order: