Reverse Engineering with 3D Scanning in Portugal

// Workflow

From Physical Part to CAD Model, Step by Step

Before scanning, we review the part, the purpose of the model and the required deliverables with you.

Part to be 3D scanned for reverse engineering

01Scanning

1. 3D Capture: We scan the current geometry of the part. Equipment and resolution are chosen according to the size, material and purpose of the project.

CAD software interface to convert point cloud to solid model

02Reconstruction

2. CAD Modelling: We rebuild the part as a surface or solid model and, when the project requires it, as a parametric model with feature history in the agreed CAD software. Neutral formats such as STEP or IGES transfer the geometry, usually without that history.

Colour map of deviation between reconstructed CAD and original scan

03Validation

3. Deviation Check: We compare the rebuilt model with the scan using a deviation map. This analysis shows the geometric differences between them, but does not by itself prove conformity with the original manufacturing requirements.

// Which service do you need?

3D scanning or reverse engineering?

3D Scanning

Captures the current geometry of the part and produces a 3D mesh (for example, STL) or inspection data. It suits cases where you need to document the part, compare it with CAD or archive its geometry.

View 3D scanning service

Reverse engineering

Uses the scan data to rebuild a surface, solid or parametric CAD model, depending on the project. It suits cases where you need to remanufacture, modify or replace a part without drawings or an original model.

Possible deliverables

3D mesh (STL) of the scanned geometry
Surface or solid CAD model, exported in the agreed format (for example, STEP or IGES)
Parametric model with feature history, in the agreed CAD software, when applicable
Deviation map between the rebuilt model and the scan, to assess geometric differences

The specific deliverables depend on the part and are defined in the proposal.

Industrial applications

Replacement parts for equipment without technical documentation or an active supplier
Recovery of worn moulds and tools
Modification or optimisation of existing components
Turned parts, sheet metal and components with complex surfaces

Request a technical assessment

Approximate dimensions and material of the part
Purpose: remanufacturing, modification, inspection or archiving
File format and CAD software used by your team
Critical dimensions or known tolerances, if any
Number of parts and required lead time
Whether the part can be shipped or should be scanned at your premises

With this information, the S4METRO team assesses feasibility and prepares the proposal.

// Perguntas Frequentes

Engenharia Inversa: FAQ

Usually, the physical part and the intended purpose of the model. Any partial drawings, critical dimensions or known tolerances should be shared. S4METRO performs the 3D scanning and CAD reconstruction, and the delivery format is agreed before work starts.

Yes, when the deliverable is an editable parametric model. The geometry can be modified, optimised or reinforced compared with the original part, according to the requirements defined by the customer.

Yes. We scan the mould in its current condition and rebuild its surfaces in CAD. Worn areas can be corrected in the model based on the available references, such as unworn geometry, existing drawings or dimensions provided by the customer.

Do you have a part without a technical drawing or CAD model?

Talk to Engineering

Equipment

Services

3D Scanning

Reverse Engineering Service with 3D Scanning

From Physical Part to CAD Model, Step by Step