Modular and Stackable HomeLab Mini Rack

Meet the adaptive and easy to print HomeLab Mini Rack,

I kept accumulating different files, modding them in OrcaSlicer to adapt them to what I wanted for a simple rack to house all my HomeLab needs. But everyting was very specific and when the hardware changed, it had to start over again.

So I designed this little rack system. The objectives were:

• Each rack level must be adaptable to new hardware (mounting points)
• Each rack level must be removable and extendable in height (so no glueing)
• The design of the mounting parts must allow for friction fit and screwing, as well as incoperate a “flush against the hardware” mount as well as a groove to be able to hold a PCB. Improve friction on mounting parts with an old mousepad material or 3M tape
• Small material consumption and quick print (the rack base takes round 2:30h on a Bambulab P1P and around 73g of PETG)

The levels feature pins on the top side and holes on the bottom to make the stackable and stabil. In my printing I found them to be a snug fit, so I gave the pins a quick swipe with a sanding stick and that made them fit perfect. That of course depends on your priner settings (flow).

Each level has 4mm wide rails where the mounting parts can be fitted and adjusted to whatever you want to mount. They fit snug as well but for more security you can use screws (screw holes in mounting parts is 4mm with a 6,5mm space to accomodate the screw head. Just use a washer on the underside and secure it with a nut).

The mounting parts feature two grooves to be able to clamp them against a pcb, so you can mount probably mini itx boards or mini pc board to the rack base aswell (or raspberry pis, other single board computer).

And last but not least you can find feet for the rack, that allows to have one common file for all levels and print them in a flat orientation, as well as extenders to just add to the existing rack, should you need a higher level.

I added two sidewall files. A one level and a two level. You can use 3M doublesided tape to fix them to the side of the level to cover up the level. You can leave out the top and bottom layer, choose your favorite infill or you add information about the level to it.

I would love to get your feedback and pictures of your new homelab rack

Enjoy and keep printing / hacking

PS: Since I only use the free version of Shapr3D, I can not export step files. I am working on that. And Pictures of an assembled rack will follow.

My additions to my sidewalls:

• Ubuntu Logo: https://www.printables.com/model/386110-ubuntu-logo
• Intel Logo: https://www.printables.com/model/385854-intel-logo
• Raspberry Logo: https://www.printables.com/model/243775-raspberry-pi-logo
• Duino Coin Logo: https://www.printables.com/model/300277 
• ServerRoom Sign: https://www.printables.com/model/518111-server-room-sign