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Everyday fixes
Race bib magnetic holder clips for running vest
A set of four magnetic bib holders that pin a race number to a Salomon or Nike running vest, a Hoka singlet or a cycling jersey without safety pins puncturing expensive fabric. Each clip is a two-part sandwich: an outer 20 mm disc with a 10 x 2 mm neodymium magnet pocket and a small raised logo area, and an inner disc that clamps the bib through the fabric. Discs are 3 mm thick with 1.5 mm walls around the magnet and a 0.4 mm interference press fit; print them flat in PETG in your club colours and glue the magnets with a drop of CA. 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 diameter of both discs | 20 mm |
| rounded edge radius | 0.5 mm |
| total thickness | 3 mm |
| magnet pocket diameter (0.4mm press fit over 9.8-10mm magnet) | 10.2 mm |
| magnet pocket depth | 2.2 mm |
| base thickness | 2 mm |
| raised rim height | 0.5 mm |
| raised rim width | 1.5 mm |
| distance from edge to rim | 1.5 mm |
Example prompt
Design a two-part race bib magnet holder: an outer disc 20 mm in diameter and 3 mm thick with a 10.2 mm diameter, 2.2 mm deep magnet pocket at 0.4 mm press fit, and a matching 20 mm inner disc 2 mm thick with a 0.5 mm raised rim, both with 0.5 mm rounded edges.
Fit notes
Downloaded holders are made for whatever magnet the designer had, and a wrong fit lets the magnet escape mid-race. Tell SpeakCAD your magnet size and how thick your vest fabric is, preview the discs in the browser, add a name in the chat, then download the STL.
Questions people ask about race bib magnetic holder clips for running vest
A set of four magnetic bib holders that pin a race number to a Salomon or Nike running vest, a Hoka singlet or a cycling jersey without safety pins puncturing expensive fabric. Each clip is a two-part sandwich: an outer 20 mm disc with a 10 x 2 mm neodymium magnet pocket and a small raised logo area, and an inner disc that clamps the bib through the fabric. Discs are 3 mm thick with 1.5 mm walls around the magnet and a 0.4 mm interference press fit; print them flat in PETG in your club colours and glue the magnets with a drop of CA.
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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