4 Lenovo Tiny PCs packed into a 10-inch 3D-printed mini rack
A Reddit user shared their compact home server setup: four Lenovo Tiny mini PCs mounted in a custom 10-inch rack holder printed from PETG plastic. The whole unit sits neatly on a shelf or desk. It's a handy reference for anyone wanting to tidy up multiple small-form-factor servers like a Mac mini.
Lenovo Tiny machines are palm-sized PCs that use little power and run quietly — popular choices for home servers. This builder wanted four of them in one tidy unit, so they designed and 3D-printed a holder in PETG plastic sized to fit a 10-inch rack. A 10-inch rack is a smaller standard than the typical 19-inch server rack you'd see in a data center, making it practical for home use on a shelf or inside a small cabinet.
For Mac mini server operators, the idea translates directly: a 3D-printed bracket sized for the Mac mini could stack two or more units cleanly. Free designs for Mac mini holders already exist on sites like Printables and Thingiverse. The main thing to watch is leaving enough gap around each machine for heat to escape — small PCs can throttle or overheat if airflow is blocked.
Key points
- Four Lenovo Tiny mini PCs fitted into a single 10-inch mini rack — a tidy, space-saving home server build
- The rack holder was 3D-printed from PETG plastic — a cheap DIY option when no off-the-shelf product fits
- The same approach works for Mac minis: search Printables or Thingiverse for ready-made bracket designs
- A 10-inch rack is much smaller than a standard data-center rack and fits comfortably on a home shelf
- Always leave ventilation gaps around small PCs to prevent overheating
Quick term guide
- home server
- A personal computer setup at home used to run services or store files instead of regular daily use.
- server
- A computer that stores files and shares them with other devices in your home.
- Mini PCs
- Very small desktop computers that can fit in the palm of your hand or on a small shelf.
- 10-inch rack
- A small rack frame used to mount compact server or network equipment.
- reference
- Using a source to find information or confirm facts while working.
- Mac mini
- A small desktop computer made by Apple.
- data center
- A large facility full of servers that runs internet services and AI computations
- Mac mini server
- A Mac mini used as an always-on computer for files, apps, backups, or automation.