FreeCAD Reverse Engineering | Create 3D Model from image | Trace picture | Convert Image to 3D part
🛠️ Learn how to turn a 2D image into a precise 3D model using FreeCAD! In this tutorial, I’ll guide you step-by-step through tracing an image, fixing sketch errors, and converting it into a functional tyre defect gauge—a tool used to inspect rail wheel wear.
📥 Download the reference image file: https://ko-fi.com/s/db8088bd9b
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What You’ll Master
🔹 Image-to-3D Conversion in FreeCAD:
✅ Importing & calibrating reference images (exact scaling)
✅ Advanced tracing techniques (Polyline tool, arc modes, constraints)
✅ Fixing broken sketches ("Wire Not Closed" error solutions)
✅ Extruding 2D sketches into 3D parts (Pad tool)
✅ Adding professional touches (fillets, chamfers)
🔧 Key Tools Used:
FreeCAD Part Design Workbench
Polyline Tool (with tangential arcs for smooth curves)
Image Calibration (for real-world dimensions)
Fillet/Chamfer (for realistic edges)
⏱️ Tutorial Chapters:
00:00 - Intro: Why trace images in FreeCAD?
01:30 - Importing & scaling the reference image (critical step!)
03:45 - Tracing the outline (pro tips for accuracy)
06:10 - Handling arcs & complex curves
08:25 - Debugging open sketches (must-know fixes!)
10:40 - Extruding into 3D (Pad tool settings)
12:15 - Finishing with fillets/chamfers
13:00 - Exporting for 3D printing (STL)
💡 Pro Tip: Struggling with tracing? Pause at 03:45 to see how I use the Polyline M-key modes for perfect curves!
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