Industry
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Mechanical
What We Did
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3D Scanning
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Reverse Engineering
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Exporting data: STL to STEP
Project Details
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Engine block
Scan-Based Parametric Modelling for CNC Manufacturing -
3D Scanning Accuracy: ± 0.06 mm
Final CAD Accuracy: ± 0.05 mm (Average). Local deviations may vary depending on geometry and feature accessibility
The reconstruction of a complex 3-cylinder engine block required a fully parametric modelling approach to accurately capture its dense geometry and functional features.
Starting from a high-resolution 3D scan used as a geometric reference, the entire component was rebuilt from first principles using sketches and feature-based modelling. Particular attention was given to the definition of primary datums, alignment strategies, and the hierarchical organisation of features, ensuring both robustness and design intent throughout the model. Due to the high density of details, ranging from mounting interfaces and internal cavities to intricate fillets and transitional surfaces, the modelling process was both time-intensive and methodically structured. Each element was interpreted rather than replicated, allowing for clean topology, controlled curvature, and manufacturable geometry.
The resulting CAD model was fully parametric and optimised for downstream applications. The final STEP file was exported and successfully integrated into a CAM environment, enabling the generation of precise toolpaths for CNC machining. This workflow ensured not only geometric fidelity to the original scan data, but also a high level of control, adaptability, and production readiness.
