I’ve always thought 10-inch racks were kind of a niche gimmick… until I realized 10 inches is 254mm, and my 3D printer’s bed is 256mm. 256 is greater than 254, therefore: I should absolutely 3D print a bunch of rack parts and build a tiny homelab. In this video I build out a GeeekPi Rackmate T1 (8U) with a mix of printed brackets, patch panels, blanks, and a few custom designs I threw together in Onshape as a CAD beginner. I start with the basics—switching and a keystone patch panel—then rack-mount a tiny HP EliteDesk-style mini PC using a modified printed enclosure with front keystones (yes, I messed up and mounted the keystones upside down… and wired them in a not-great way). I also design a combined mount for a 2.5GbE switch plus a JetKVM, because space is limited and I wanted it to look clean. For the “NAS” side, I drop an ASRock N100 DC-ITX board into a printed mini-ITX rack case, add a 2.5GbE card, and hook it to a 6-bay 2.5" cage—then immediately admit cable management and power bricks in a 10-inch rack are a pain. The takeaway: 10-inch racks aren’t the most rational solution, but with PETG prints and a little creativity, they’re ridiculously fun.