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Adapters & couplers
Bontrager Blendr to GoPro mount adapter
Trek bikes ship with Bontrager Blendr stem and bar bases that accept only Blendr accessories. This adapter slides into the Blendr base like an official mount and presents a standard three-finger GoPro interface, so a Cycliq camera, Outbound light or any GoPro-foot accessory can hang from the stock base. The Blendr slide is measured from your base and locked by the original screw, the GoPro fingers are 3 mm thick with 3.2 mm gaps and a 5.2 mm hole, and the body is 8 mm thick. Print it slide-down in PETG or nylon; the fingers need no supports. 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 |
|---|---|
| length along rail | 25 mm |
| width at base | 20 mm |
| slide thickness | 6 mm |
| screw hole diameter | 4.5 mm |
| height connecting slide to GoPro mount | 10 mm |
| finger thickness | 3 mm |
| body height (radius direction) | 8 mm |
| through hole diameter | 5.2 mm |
| finger length (protrusion) | 18 mm |
Example prompt
Design an accessory adapter with a Bontrager Blendr style slide 20 mm wide, 6 mm thick and 25 mm long with a 4.5 mm screw hole, and a three-finger GoPro mount on the opposite face with 3 mm fingers, 3.2 mm gaps, a 5.2 mm hole and 8 mm body.
Fit notes
Blendr bases have subtle differences between stem and bar versions, so a random download often sits proud or will not take the screw. Give SpeakCAD the measured slot width, depth and screw position, preview the adapter in the browser, fine-tune it in the chat, then download the STL.
Questions people ask about a Bontrager Blendr to GoPro mount adapter
Trek bikes ship with Bontrager Blendr stem and bar bases that accept only Blendr accessories. This adapter slides into the Blendr base like an official mount and presents a standard three-finger GoPro interface, so a Cycliq camera, Outbound light or any GoPro-foot accessory can hang from the stock base. The Blendr slide is measured from your base and locked by the original screw, the GoPro fingers are 3 mm thick with 3.2 mm gaps and a 5.2 mm hole, and the body is 8 mm thick. Print it slide-down in PETG or nylon; the fingers need no supports.
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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