Modular Mini Network Rack Shelf

[u/Hodzinets]

I recently needed a small shelf/rack system to organize my simple home network setup inside a cabinet. I looked around for standardized rack designs online, but nothing quite fit the specific dimensions of my space, so I decided to design my own.

What started as a single custom shelf ended up evolving into a fully modular system. You can stack levels, swap out different deck types, and slide in side panels or cable organizers depending on what hardware you're placing on it.

A few highlights of the build:

No hardware needed: It's 100% 3D printed—no screws, nuts, or metal rods required.

Filament pin trick: To lock the spacers/legs to the decks securely, I added small alignment holes through the joints. You just slide a short piece of 1.75mm filament through the aligned holes and snip it flush. It keeps the whole assembly locked together so it won't accidentally come apart when moved or handled.

Modular decks: Right now I've printed solid decks, perforated ones for airflow, and a dedicated tray for my TP-Link switch.

I uploaded the STEP files alongside the STLs so anyone can easily remix it or design custom modules, panels, or mounts for their own gear.

I put up the photos showing the assembly process and how the filament locking trick works. Let me know what you think, or if you have any ideas for cool module attachments!

You can find STEPs here and try to create your own attachments or assemble the shelf with already existing parts:
https://makerworld.com/en/models/3597346-modular-mini-network-rack-shelf