The original part may be discontinued, damaged or missing a feature. A scan can help record what remains, but a replacement requires more than copying that surface. The useful workflow separates the evidence, the design decisions and the checks needed before use.
1. Understand the part and its interfaces
Start with photographs, the most intact sample available and any drawings or dimensions. Explain what broke, what the part attaches to and whether the goal is a copy or a modification.
A scan records the part as it exists, including wear and deformation. Where the original is incomplete, mating components and other references may be more useful than the damaged surface. Identify those gaps before deciding how to model the replacement.
2. Capture the reference information
Scanning may be useful for complex curves or as-built shape. Direct measurements can help define accessible dimensions and interfaces. Hidden internal features may require another approach.
For standalone scanning and STL/OBJ mesh deliverables, use ScanMyPart. If the goal includes CAD reconstruction or redesign, start with 9OneFour so the required reference information can be agreed first.
Read the scanning resolution guide before treating a scanner specification as a guarantee of fit.
3. Rebuild the design in CAD
A mesh is a surface reference. CAD reconstruction defines the features and dimensions needed to develop the part. That may mean restoring a damaged feature, simplifying manufacturing artifacts or changing an interface.
The scope should identify which dimensions must be checked, which are inferred and what file formats are required. A STEP export is a useful exchange format, but it does not by itself promise a native feature history or establish tolerances. Those deliverables need to be discussed explicitly.
4. Choose a material and process for the use
Do not assume a different material will match or improve every property of the original. Explain loading, environment, assembly method and any known failure. A printed prototype and a later molded or machined part may behave differently even with similar geometry.
Material and fabrication decisions should follow the requirements and supplier information. See the material comparison guide for questions to ask.
5. Review before the next commitment
A prototype may help check fit or assembly, depending on the agreed plan. Record the revision, observations and remaining questions. Manufacturing acceptance and any application-specific validation require their own criteria; a successful fit check answers only the question it was designed to test.
9OneFour’s work centers on CAD reconstruction and redesign, with prototype coordination and manufacturing handoff scoped when appropriate. Price, timing, physical-part logistics and deliverables are agreed per project rather than promised as a standard scan-to-print package.