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Everyday fixes
Front fork mudguard for mountain bike
A fork-mounted mudguard sits under the crown and behind the arch to keep mud out of your eyes and off the stanchions. The guard is about 250 mm long and 100 mm wide with four zip-tie slots 5 x 3 mm along the sides, a 1.5 mm thickness for flex, and a curved profile with a 90 mm radius to follow a 2.4 inch tyre. Printing it flat in TPU or thin PETG gives the compliance needed to bend around the fork arch without cracking. 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 |
|---|---|
| developed (flat) length along the curve | 250 mm |
| width | 100 mm |
| shell thickness | 1.5 mm |
| curvature radius | 90 mm |
| rounded corner radius on flat pattern | 2 mm |
| fork arch notch width | 60 mm |
| fork arch notch depth | 15 mm |
| zip-tie slot width (along length) | 5 mm |
| zip-tie slot height (across edge) | 3 mm |
| per edge | 4 |
| distance from edge to slot center | 8 mm |
Example prompt
Design a mountain bike front fork mudguard 250 mm long and 100 mm wide, 1.5 mm thick, curved to a 90 mm radius, with four 5 x 3 mm zip-tie slots along each edge, a 60 mm wide notch for the fork arch, and 2 mm rounded corners.
Fit notes
Forks differ in arch width and stanchion spacing, and SpeakCAD sizes the slots and the cut-out for your exact fork rather than a generic template. Widen the guard for plus tyres or add a logo recess in the chat, and preview in the browser.
Questions people ask about a front fork mudguard for mountain bike
A fork-mounted mudguard sits under the crown and behind the arch to keep mud out of your eyes and off the stanchions. The guard is about 250 mm long and 100 mm wide with four zip-tie slots 5 x 3 mm along the sides, a 1.5 mm thickness for flex, and a curved profile with a 90 mm radius to follow a 2.4 inch tyre. Printing it flat in TPU or thin PETG gives the compliance needed to bend around the fork arch without cracking.
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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