This is a mini-itx case that fits - a mini-itx motherboard with a flex atx power supply. Modeling this body, I was inspired by the design mac pro 2013

Printed Petg plastic. Then post-processing - grinding with sandpaper of different gradations: p80-p120-p220-p320. Then putty was needed in some problem areas. Then primer and paint. The result is a smooth surface, devoid of the disadvantages of 3D printing. The lower fan must be put on the blower. Fan 140 mm, with mounts for 120 mm

To assemble the case you will need: Countersunk screws m3 - L10x20pcs Countersunk screws m4 - L30x4pcs