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Tools & jigs
Presta valve core remover tool keychain
A tiny keychain tool that unscrews the removable core from a Presta valve on Stan's, Muc-Off or Peaty's tubeless valves so you can inject sealant or clear a clog trail-side. The head has a slot sized to the two flats of a standard valve core with 0.1 mm clearance, a 6 mm bore that centres over the valve stem, a knurled 10 mm shank and a 5 mm keyring hole. Print it upright in PETG at 100 percent infill and 0.1 mm layers so the slot faces are sharp; it takes far more torque than a core needs. 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 |
|---|---|
| overall length | 35 mm |
| main rod diameter | 9 mm |
| length of head section (bore+slot) | 8 mm |
| centring bore diameter (valve stem clearance) | 6 mm |
| centring bore depth | 4 mm |
| slot width (with 0.1mm/side clearance already) | 3.3 mm |
| slot depth from tip | 5 mm |
| knurled shank length | 10 mm |
| keyring hole diameter | 5 mm |
| distance of keyring hole centre from tail end | 4 mm |
Example prompt
Create a Presta valve core tool 35 mm long with a 10 mm knurled shank, a head slot 3.3 mm wide and 5 mm deep for the core flats with 0.1 mm clearance, a 6 mm bore 4 mm deep centring on the valve stem and a 5 mm keyring hole.
Fit notes
Bought core tools are strong but easy to lose, and a downloaded one may be cut for a different core. Ask SpeakCAD for the tool with the flat width you measure on your cores, preview it in the browser, add a valve cap holder in the chat, then download the STL.
Questions people ask about a Presta valve core remover tool keychain
A tiny keychain tool that unscrews the removable core from a Presta valve on Stan's, Muc-Off or Peaty's tubeless valves so you can inject sealant or clear a clog trail-side. The head has a slot sized to the two flats of a standard valve core with 0.1 mm clearance, a 6 mm bore that centres over the valve stem, a knurled 10 mm shank and a 5 mm keyring hole. Print it upright in PETG at 100 percent infill and 0.1 mm layers so the slot faces are sharp; it takes far more torque than a core needs.
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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