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Everyday fixes
Hard earbud case with carabiner loop
Wired earbuds get crushed and tangled in a pocket, and a hard clamshell keeps them safe on a keyring or bag strap. The case is a 60 mm round shell 22 mm tall in two halves with a living hinge or pin hinge, a snap tab with 0.2 mm interference, 1.5 mm walls, a 10 mm loop for a carabiner, and an internal post that the cable wraps around. Printing each half open-side-up in PETG gives crisp snap features. 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 |
|---|---|
| outer radius of case | 30 mm |
| wall thickness | 1.5 mm |
| height of each half | 11 mm |
| floor thickness | 1.5 mm |
| central wrapping post diameter | 15 mm |
| hinge pin diameter | 3 mm |
| radial clearance for pin holes | 0.3 mm |
| hinge knuckle outer diameter | 8 mm |
| snap bump radius | 2 mm |
| press-fit interference | 0.2 mm |
| carabiner loop inner (clear) diameter | 10 mm |
| carabiner loop material thickness | 2 mm |
Example prompt
Design a round earbud case 60 mm in diameter and 22 mm tall in two 11 mm halves with 1.5 mm walls, a 3 mm pin hinge on one side, a snap tab with 0.2 mm interference opposite, a 10 mm carabiner loop, and a 15 mm central wrapping post.
Fit notes
Rather than a case sized for someone else's earbuds, tell SpeakCAD the diameter of your buds and cable length and it generates a shell with the right internal volume. Change the hinge type or add a foam recess in the chat and preview before downloading.
Questions people ask about a hard earbud case with carabiner loop
Wired earbuds get crushed and tangled in a pocket, and a hard clamshell keeps them safe on a keyring or bag strap. The case is a 60 mm round shell 22 mm tall in two halves with a living hinge or pin hinge, a snap tab with 0.2 mm interference, 1.5 mm walls, a 10 mm loop for a carabiner, and an internal post that the cable wraps around. Printing each half open-side-up in PETG gives crisp snap features.
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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