July 16, 2026 · 7 min read
When a spare part is discontinued or unobtainable, reverse engineering combined with 3D printing lets you recreate it starting from the original part, even a broken one. The process is straightforward: you measure or scan the component, rebuild a precise CAD model and produce it with the most suitable technology. It's the ideal solution for aging machinery, appliances, vintage automotive parts and industrial equipment for which no one sells the spare anymore.
How the process works
- 1. Part analysis: the original component, its function and material are studied, even if damaged.
- 2. Measurement or 3D scanning: precise dimensions are captured with manual tools or 3D scanners.
- 3. CAD modeling: the digital model is rebuilt, correcting wear and defects in the original.
- 4. Material choice: engineering plastics, resins or, for metal parts, dedicated printing.
- 5. Printing and verification: the part is produced and checked for fit and function.
When it pays off
| Situation | Why reverse engineering helps |
|---|
| Discontinued spare part | The part is recreated without depending on the maker |
| Rare or unobtainable component | Obtained in days instead of waiting months |
| Small batches or one-offs | No expensive mold to produce |
| Improving the part | A design flaw in the original can be fixed |
Prototyping and production
Beyond spare parts, the same approach serves to prototype new products: from the CAD model you quickly reach a physical part to test, iterating the design at low cost before wider production. The digital model also remains a reusable asset: it can be modified, improved or reproduced at any time. For projects that also need data management, catalogs or integration with business processes, the physical part sits alongside custom software or an ERP for digitalizing production.
We do reverse engineering, CAD modeling and 3D printing of spare parts and prototypes. If you have an unobtainable part or an idea to prototype, get in touch with a photo and the dimensions: we'll assess feasibility together. See more work in our portfolio.
Frequently asked questions
What is reverse engineering of a spare part?
It's the process that rebuilds a component starting from the original part, even a broken one: you measure or scan it, create a precise CAD model and produce it with 3D printing or other technologies. It's used when the spare is discontinued or unobtainable.
Can a part be recreated if I only have the broken one?
Often yes. Even from a damaged part you can extract enough dimensions and geometry to rebuild the CAD model, correcting wear and defects. The more complete the part, the more precise the result.
What materials can be used?
It depends on the part's function: engineering plastics and resins for many spares and prototypes, tougher materials or metal for components under stress. The choice is made based on load, temperature and intended use.
Is 3D printing suitable for prototyping too?
Yes, it's one of the main uses. It lets you move quickly from CAD model to a physical part to test, iterating the design at low cost before wider production, without making expensive molds.