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Brackets & mounts
Under-shelf bracket for a cable tray
A J-shaped bracket that screws to the underside of a shelf or table and cradles a bundle of cables or a slim power strip out of sight. The channel is 60 mm wide and 40 mm deep with a 3 mm wall, an outward flare at the lip so cables drop in easily, and a 30 mm top flange with two 4 mm holes for wood screws. Two or three brackets spaced 400 mm apart carry a full run, and the open top means nothing has to be threaded through. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| internal-ish width of U channel | 60 mm |
| depth of channel (vertical drop) | 40 mm |
| wall thickness | 3 mm |
| length along cable run | 25 mm |
| outward flare of bottom lip | 5 mm |
| top flange width (along length axis) | 30 mm |
| flange thickness | 3 mm |
| countersunk screw hole diameter | 4 |
| countersink diameter | 8 |
| countersink depth | 2 |
| zip tie slot width | 4 mm |
| zip tie slot length (thin dimension) | 2 mm |
Example prompt
Create a J-shaped under-shelf cable bracket. Channel 60 mm wide, 40 mm deep, 3 mm walls, 25 mm long. Lip flared outward 5 mm. Top flange 30 mm wide with two 4 mm countersunk holes 40 mm apart. Add two 4x2 mm zip tie slots in the floor.
Fit notes
Bundles vary from a couple of thin leads to a fat cluster with adapters, and SpeakCAD sizes the channel to whatever you describe. Preview the profile, then ask for a deeper trough, a zip-tie slot or a wall-mounted version. Each revision is a single sentence away.
Questions people ask about an under-shelf bracket for a cable tray
A J-shaped bracket that screws to the underside of a shelf or table and cradles a bundle of cables or a slim power strip out of sight. The channel is 60 mm wide and 40 mm deep with a 3 mm wall, an outward flare at the lip so cables drop in easily, and a 30 mm top flange with two 4 mm holes for wood screws. Two or three brackets spaced 400 mm apart carry a full run, and the open top means nothing has to be threaded through.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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