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Replacement parts
Window handle with 7 mm square spindle
Tilt-and-turn and casement windows use an espagnolette handle on a 7 mm square spindle; when the original breaks the window is stuck. The replacement is a 140 mm lever with a 40 mm round rosette 12 mm thick, a 7.2 mm square bore, two screw holes 43 mm apart hidden under a cover cap and a comfortable 20 mm grip. Print the lever on its side at 100 percent infill in PETG or ABS, and press the original steel spindle into the bore for strength. 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 |
|---|---|
| rosette diameter | 40 mm |
| rosette thickness | 12 mm |
| screw hole diameter | 4.2 mm |
| square spindle bore side | 7.2 mm |
| spindle bore depth | 30 mm |
| lever length | 140 mm |
| lever width | 20 mm |
| lever thickness (matches rosette top) | 12 mm |
| fillet radius on lever edges | 4 mm |
| cap thickness | 6 mm |
| cap wall thickness | 1.6 mm |
| snap lip depth | 1.2 mm |
| fit clearance | 0.3 mm |
Example prompt
Design a window espagnolette handle: a 40 mm round rosette 12 mm thick with two 4.2 mm screw holes 43 mm apart and a snap-on cover cap, a 7.2 mm square bore 30 mm deep, and a 140 mm lever 20 mm wide with 4 mm fillets.
Fit notes
SpeakCAD builds the lever to the spindle size, screw spacing and hand orientation of your window rather than a generic import, and can match the length of the other handles in the room. Add a lockable variant or a longer boss in one more message. Open the ready-made model free, change its numbers in the viewer and download the STL or 3MF free; AI changes use credits.
Questions people ask about a window handle with 7 mm square spindle
Tilt-and-turn and casement windows use an espagnolette handle on a 7 mm square spindle; when the original breaks the window is stuck. The replacement is a 140 mm lever with a 40 mm round rosette 12 mm thick, a 7.2 mm square bore, two screw holes 43 mm apart hidden under a cover cap and a comfortable 20 mm grip. Print the lever on its side at 100 percent infill in PETG or ABS, and press the original steel spindle into the bore for strength.
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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