3D-Printed Modular Rack for Mac Mini M4 & Beelink EQ12/EQ13

As I expanded my home lab, I needed a space-saving solution to neatly stack my Mac Mini M4 and Beelink EQ12/EQ13 mini PCs. Instead of settling for a cluttered desk setup, I designed a custom 3D-printed modular rack that securely stacks multiple mini PCs while ensuring proper airflow.

The best part? No screws or glue required! This rack uses an interlocking design, making it easy to assemble, modify, and expand as needed.

Why I Designed This Rack

Mini PCs are great for compact, efficient computing, but stacking them directly on top of each other causes overheating and limits access to ports. Traditional shelves or stands weren’t ideal because they either required extra hardware, took up too much space, or didn’t provide the modularity I wanted.

So, I designed a simple, tool-free rack system that holds each device securely while maintaining airflow and keeping everything organized.

Design Features

? Three Holder Sizes – The rack supports different mini PCs with three bracket sizes:

• 50mm – Designed for the Mac Mini M4 to provide extra clearance and airflow.
• 38mm – Fits the Beelink EQ13 snugly.
• 40mm – Perfect for the Beelink EQ12.

? Interlocking Stackable Design – Each bracket snaps into place, making it easy to add or remove layers without tools.

? Ventilation Gaps – The design includes openings that promote airflow and prevent overheating.

? Circular Indents – The top of each bracket features an indentation for rubber feet or anti-slip pads, keeping everything stable.

? Customizable & Expandable – Add as many layers as needed to stack multiple mini PCs securely.

How It Works

• Print the necessary brackets based on the mini PC size you’re using .
• Start with the bottom layer by placing the first set of brackets on your desk or server shelf.
• Insert the first mini PC into the brackets, ensuring a snug fit.
• Stack the next set of brackets on top, aligning them properly.
• Repeat the process for additional mini PCs.

Since the design doesn’t require screws or glue, you can reconfigure it anytime based on your setup needs.

Print Settings & Materials

For best results, I recommend printing these in PLA. It’s easy to print, rigid enough for the stack, and works great in most indoor setups. If you expect high temperatures or more flexibility, PETG is also a solid option.

Print Settings:

• Material: PLA
• Supports: Required only for the holder piece
• Support Type: Tree (Auto)
• Threshold Angle: 24°

Download the STL Files

You can download the STL files for this rack here:

https://www.thingiverse.com/thing:6975436

Final Thoughts

This modular rack has been a game-changer for organizing my mini PCs. It keeps everything compact, stable, and well-ventilated, and the tool-free assembly makes it easy to adjust as needed.

If you’re running a similar setup with a Mac Mini M4, Beelink EQ12, or EQ13, this 3D-printed rack is a simple and effective solution to keep your workspace clean and efficient.

Let me know what you think! If you build your own, share a photo of your setup—I’d love to see how others use this design.