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The prompt on this page opens in SpeakCAD already filled in — after sign-in too. The model renders in your browser. Preview is free.Replacement parts
Combination-square head replacement 300 mm
This is not a fixed STL. SpeakCAD generates the combination-square head replacement 300 mm to your millimetres, you adjust it in the chat, then you download and print it.2
Change any millimetre in the chat: wall thickness, hole size, the thing it clips onto. Iterations stay in the tab until it matches what you own.Adjust
3Print
Download a watertight STL or 3MF for 2 credits, drop it in your slicer, and print it. Small fit fixes re-download free.Get it nowThe example prompt comes with you, even through sign-in. Preview is free; a download costs 2 credits.
What a combination-square head replacement 300 mm is
A replacement head for a 300 mm combination square with a 1 mm rule slot, a 45 degree face, and an M5 lock. Print in PETG; check it against a known square before trusting it for layout.
A die-cast head cracks at the slot. In SpeakCAD you measure the rule, preview the head in the browser for free, then download the STL.
Example prompt
Create a combination-square head for a 1 mm × 300 mm rule, 45 degree face, M5 lock, 2.4 mm PETG walls. Verify against a reference square before use.
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Questions people ask about a combination-square head replacement 300 mm
A replacement head for a 300 mm combination square with a 1 mm rule slot, a 45 degree face, and an M5 lock. Print in PETG; check it against a known square before trusting it for layout.
Click Get it now on this page: the example prompt is filled in for you after you sign in. The model renders in your browser — nothing to install — and previewing is free. Adjust any millimetre in the chat, then export a watertight STL or 3MF for 2 credits when you want to print.
Start from this working example and replace any number with what you measured: Create a combination-square head for a 1 mm × 300 mm rule, 45 degree face, M5 lock, 2.4 mm PETG walls. Verify against a reference square before use.
A die-cast head cracks at the slot. In SpeakCAD you generate and preview for free, then download a file sized for the part you actually own.
No. SpeakCAD runs entirely in the browser: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL or 3MF.
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