MiniRack – Stackable Mac mini M4 rack

MiniRack turns your Mac mini M4 / M4 Pro setup into a tidy little desktop rack: one tier per device, stacked with integrated pegs, cooled by a hidden 120 mm Noctua fan. No screws, no glue, no supports.

Features

• 4 stackable tiers: Mac mini → Thunderbolt dock → 2 SSD enclosures → ventilated fan hood

• Integrated alignment pegs on every tier – no loose pins, no glue

• Mac mini held by its corners and flat stops – it doesn't move when you plug in cables; rear-left corner left open for the power button

• SSD tier with a central air channel between the two enclosures

• Hidden 120 mm fan (Noctua NF-A12x25 5V PWM, USB powered), mounted with zip ties – no screw holes to print

• Optional cradle for the Noctua NA-FC1 speed controller on the back, held by two pegs

• Cable routing along the right side of the hood with zip-tie anchors

• Rack-style ventilation slots, "MiniRack" embossed on the front

• Everything prints without supports on a standard bed (Prusa MK4S tested)

Fits

• Apple Mac mini M4 / M4 Pro (2024) – 127 × 127 × 50 mm

• UGREEN Revodok Max 213 dock – 148.5 × 96.2 × 52 mm

• 2 × Qwiizlab ES40UR NVMe enclosures – 125 × 64.8 × 23.4 mm (similar-sized enclosures should fit)

• Overall size: 158.5 × 135 × 186 mm (+33 mm at the back with the NA-FC1 cradle).

Hardware

• Noctua NF-A12x25 5V PWM (USB cable included with the fan)

• Optional: Noctua NA-FC1 fan controller (otherwise the fan runs at full speed on USB)

• 2.5 mm zip ties (4 for the fan + a few for the cable)

Print settings

• PLA (PETG recommended for the SSD tier if your enclosures run hot), 0.2 mm layers, 3 perimeters, 15 % infill

• Tiers 1–3: floor on the bed. Hood: upside down (top plate on the bed). NA-FC1 cradle: flat.

• Tip: add a modifier on the pegs (100 % infill or 4 perimeters) for extra strength.

• Peg fit depends on your printer: print the peg test coupon first (Ø6.1 / 6.2 / 6.3).

Photos show an earlier prototype; the files are the latest version (integrated pegs, SSD air channel, updated fan hood). Designed in Fusion with an AI-assisted workflow and tested on my desk. Feedback and makes welcome!