Rack cable manager 1U with 5 open hooks – drop cables in from above – 10″ and 19″ rack

Cable manager for one rack unit: five open hooks you drop patch cables into from above, plus four pass-throughs to the back. Ears for 10″ and 19″, no supports.

Fits: Patch and data cables (not mains cables) in 10″ racks (hole spacing 234.0–239.5 mm, slotted) and 19″ racks (EIA-310, 465.1 ± 1 mm); ears for both widths are in the download.

Please note: nothing has been printed yet. The tongue-and-groove joint between the part and the ears is calculated, not yet printed.

Cable manager one rack unit high for 10″ and 19″ racks, e.g. between a patch panel and a switch.

• Five open hooks: drop the cables in from above, no threading. Each hook is 10 mm wide and stands 40 mm in front of the panel; the space inside is about 37 × 27 mm.

• Four pass-throughs between the hooks lead cables to the back.

• One centre part for 10″ and 19″: only the ears change, both pairs are in the download. 19″ ears with stiffening beam.

• Ears with slots: 10″ for 234.0–239.5 mm hole spacing (there is no standard for 10″ racks), 19″ for 465.1 ± 1 mm. Fits #10-32, M5 and M6.

• Prints without supports: the centre part prints standing on its bottom edge, every slope is 45°.

Load: 1 kg of cables at most (guide value, not a tested load rating); there is no rear support for this part. Our part has not been tested on a rack yet. Print the free rack fit test part (in our “Magmacode” profile) first if you are unsure about your rack or printer.

Print settings

• Material: PETG (or ASA). No PLA: devices run warm in a rack and PLA creeps over time.

• Layer height 0.2 mm, 3 walls, 15 % infill, no supports.

• Orientation: Centre part standing on its bottom edge (hooks lie on the bed), as the file is laid out. Ears: upright, as the files are laid out.

• Print time approx. 4 h 42 min and about 81 g (centre part + pair of 10″ ears; 19″ ears are larger and take longer).

Hardware (not included)

• 4 × M3×10 countersunk screw (ISO 10642)

• 4 × M3 nut (ISO 4032)

• 4 × your rack's screw (#10-32, M5 or M6) with a washer

Assembly

1. Press the M3 nuts into the end-wall pockets, fit the ears (tongue into groove) and fasten each with 2 × M3×10 countersunk screws.

2. Screw the cable manager in with rack screws and drop the cables into the hooks from above.

Safety

1 kg of cables at most (guide value, not a tested load rating). For data and signal cables and low voltage only; do not fasten mains cables to it.

Fit

10″ ears slotted for 234.0–239.5 mm, 19″ ± 1 mm.

FAQ

How many cables fit in one hook? The space inside is about 37 × 27 mm, roughly 15–20 Cat 6 patch cables (about 6 mm across), laid loosely. We have not measured it yet.

Which material? PETG or ASA, like the inserts: it gets warm in a rack and PLA creeps over time.

How it's made

Parametric CAD (build123d, Python), exact solids. The CAD code was written with an AI assistant and checked by us; no AI-generated meshes or images. Renders are made from the CAD in Blender and show simplified placeholder cables; they are not photos.

License

CC BY-NC 4.0: you may share and adapt it for non-commercial purposes, as long as you credit Magmacode and link the license (https://creativecommons.org/licenses/by-nc/4.0/). Commercial sale of printed parts only by written agreement with Magmacode.

Matching rack inserts for Mac mini, mini PCs, Raspberry Pi, UniFi gear and switches are in the Magmacode profile.