Most cable management posts on this sub are about technique — how to comb, route, and tuck cables behind a motherboard tray to make a build look clean. This post is different: the author has stepped sideways into fabrication, designing and 3D-printing custom routing brackets to mechanically force cables into the exact paths they want for a Lian Li O11 EVO chassis.

That shift in approach is what makes it worth a closer look. A few things stand out:

• Custom geometry beats generic combs. Off-the-shelf cable combs space wires evenly, but they don't bend cables around obstacles like 90° connector exits, GPU cutouts, or the awkward gap between a vertical PSU and the back panel. A printed bracket can dictate the exact bend radius and entry angle.
• The case-specific nature is the point. The O11 EVO has a notoriously open layout where the PSU cables are highly visible. Generic solutions never quite fit. Designing for one specific chassis is exactly the kind of problem 3D printing solves well — short runs, tight tolerances, and zero tooling cost.
• Sharing the STL files is a nice nod to the community. It lowers the barrier for anyone with the same case to replicate the work without having to learn CAD themselves.

What readers can take away:

• If you have a 3D printer (or access to one), think of cable management as a geometry problem, not just a tying-and-tucking problem. PETG or ASA prints handle the warm interior of a case better than PLA, which can sag near a hot GPU backplate.
• Measure connector dimensions and bend radii before designing — 24-pin ATX cables in particular have a minimum bend radius that fights tight routing.
• Even if you don't print your own, the photos are a useful reference for where cables ideally want to terminate in an EVO build. You can often achieve 70% of the result with strategically placed velcro and twist ties once you know the target geometry.
• This is a small example of a broader pattern in PC building hobbyism: the boundary between "buying parts" and "making parts" keeps eroding as desktop fabrication tools get cheaper.

The post itself is short on words, but the photo tells the story — clean parallel runs that no amount of cable combing alone could produce.