Micro-ATX Open Frame Case

A minimal open-frame case for Micro-ATX motherboards. Designed to serve as the base for hardware testing rigs as seen here:

It should be compatible with any Micro-ATX motherboard and SFX PSU. The ones in the photo are:

• Gigabyte B760M DS3H

• be quiet! SFX L Power 500W

For one frame, you need 1200 mm of 2020 aluminum extrusion, cut into the following lengths:

• 2 x 260.00 mm

• 2 x 203.80 mm

• 2 x 134.94 mm 

Joining the profiles can be done in several ways. I've used the method outlined in this video. The Guides.3mf file includes models to help with accurately positioning the 73.00 mm and 22.51 mm through-holes.

The remaining 3D parts are attached to the frame with M3x10 and M4x10 hex screws. For the motherboard standoffs you will need M3x16 screws. On the receiving end are M3 and M4 T-Nuts. 

I used these red and white momentary switches for the power and reset buttons. An UTP cable works well as it has the exact number of strands for all required front panel pins (power sw, reset sw, power led and hdd led).

All parts printed in PETG with a 0.6 mm nozzle and 3 perimeters. 

Many thanks to the authors of the following models:

• General Purpose Handle

• Zip Tie Mount

• Ultimate Nut Knob Generator

For similar, but fully 3D printed versions, please check out my Micro-ATX frame and Mini-ITX stand models.