Precision casting with burnt-out 3D printed models is an increasingly valued technique in industry, allowing the production of metal parts with complex geometries and high dimensional accuracy. This process, which replaces traditional methods based on wax or polystyrene foam models, uses master models printed with photopolymer resins via technologies such as stereolithography (SLA).
At NM3D Ibérica, we highlight the role of Kings 3D industrial printers, which offer a robust, cost-effective, and efficient solution for producing burn-out moulds for precision casting — with applications in sectors such as aerospace, automotive, jewellery, mechanical engineering, and others.
Advantages of casting with burn-out models
One of the main benefits of this technology is the ability to manufacture parts with extremely complex geometries, without the need for draft angles, clearances, joints, or internal cores. Accuracy can reach up to 20 microns, significantly reducing tolerances and the time required for finishing operations.
3D printed photopolymer models also feature superior mechanical strength compared to wax or foam models, which is especially important in the production of large parts. Furthermore, printing lightweight internal structures (such as lattices or cellular cavities) reduces resin consumption, printing time, and residue during the burnout phase, minimising internal pressure and ash content.
Optimised production process
Burnt-out 3D printed model casting is ideal for fast production of single items or short runs, as well as for the replacement of discontinued technical components. The typical workflow includes the following steps:
- 3D scanning of the original part (when no CAD model exists) and modelling in computer-aided design software;
- 3D printing of the master model, followed by post-processing;
- Attachment of gating channels if not integrated into the model;
- Formation of the ceramic shell or outer mould;
- Burning out the model and calcining the mould;
- Filling the mould with molten metal;
- Removing the shell and finishing the metal part.
This method enables production of components such as housings, impellers, technical bodies, gears, turbines, and other parts with sophisticated and demanding geometries.
Application in reverse engineering
In a context marked by difficulties in sourcing spare parts — notably for equipment imported from the European Union, Japan or the United States — the technology of casting with burnt-out 3D printed models enables reproduction of parts from the original physical sample, even without access to the CAD file or technical drawing.
Kings 3D Printers: Reliable technology serving production
Kings 3D printers have demonstrated high reliability in these applications, combining high resolution, large build volumes, and compatibility with resins suitable for clean burnout. They provide an effective and more affordable alternative to expensive conventional equipment, offering a rapid and sustainable return on investment.
Support from NM3D Ibérica
At NM3D Ibérica, we provide the most advanced technologies to integrate 3D printing into precision casting processes. If you seek efficiency, versatility, and quality in producing complex metal parts, contact us.
Contacts
Email: sac@nm3diberica.com