I designed and 3D printed a functional Micro-ATX PC tower in PLA — running strong after a year of daily use
After a year of daily use with zero warping or heat issues, I'm finally confident enough to share my custom 3D printed Micro-ATX PC case!
The Build: Printed entirely in PLA on a Prusa MK4S, this compact cube case measures roughly 9"×9"×10" and houses a full Micro-ATX motherboard, standard ATX PSU, and dedicated GPU. Total print time was approximately 90 hours across multiple printed sections that were assembled and glued together.
The Design Challenge: PLA has a relatively low softening temperature (~60°C), so thermal management was the primary design concern. The solution was aggressive hex mesh ventilation on three sides, the top, and a removable bottom panel with one 120mm fan mount on the front side. After a year of continuous operation there is no hint of warping anywhere.
Features:
- Full Micro-ATX motherboard support
- Standard ATX PSU compatible
- PCIe expansion slots with direct motherboard alignment — no risers needed
- Hex mesh panels on all major faces for maximum airflow
- Removable side panels for easy access to the components inside
- Two-tone black/silver color scheme
What I learned: Hex mesh patterns give you the best combination of structural rigidity and airflow — the hexagonal geometry is surprisingly strong even in PLA. Keeping component TDP modest is equally important as the ventilation design itself.