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Everyday fixes
Handlebar bike light mount adapter
Many bike lights ship with a rubber strap that slips on cold mornings or a bracket sized for a 25.4 mm bar that will not stretch to a 31.8 mm one. A printed adapter wraps a 31.8 mm bar with a two-piece clamp secured by an M5 bolt, presents a 22 mm diameter stub for the light's original bracket, and leaves 5 mm of standoff so the light sits above the bar tape. PETG or ASA survive sun and rain far better than PLA, and a 2 mm rubber shim recess stops rotation. 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 |
|---|---|
| along bar axis | 40 mm |
| through hole clearance | 5.3 mm |
| M5 nut AF ~8mm, add clearance | 8 mm |
| M5 nut thickness ~4mm, trap slightly less for press retention | 3.2 mm |
| distance from bar center to bolt center | 12 mm |
Example prompt
Design a two-piece handlebar clamp for a 31.8 mm bar with 4 mm wall thickness, two M5 bolt holes with nut traps, a 22 mm diameter stub 25 mm long on top for a light bracket, and a 2 mm deep rubber shim recess inside the clamp.
Fit notes
Give SpeakCAD your bar diameter and the fitting on your light and it generates an adapter that fits both without filing. Ask for a GoPro-style tab or a longer offset in the chat, and preview it before downloading.
Questions people ask about a handlebar bike light mount adapter
Many bike lights ship with a rubber strap that slips on cold mornings or a bracket sized for a 25.4 mm bar that will not stretch to a 31.8 mm one. A printed adapter wraps a 31.8 mm bar with a two-piece clamp secured by an M5 bolt, presents a 22 mm diameter stub for the light's original bracket, and leaves 5 mm of standoff so the light sits above the bar tape. PETG or ASA survive sun and rain far better than PLA, and a 2 mm rubber shim recess stops rotation.
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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