What is a 3D printer?
A 3D printer is a machine that produces physical objects by adding material layer by layer, based on a digital model.
Unlike traditional manufacturing equipment, which removes material from a raw block (machining), a 3D printer builds parts directly from data. This makes it possible to create complex geometries, internal structures, and highly customised designs.
At Lattice Services, 3D printers are used as a core tool for prototyping, testing, and developing medical-grade solutions.
How does a 3D printer work?
The process always starts with a digital file, usually a CAD model exported in formats such as STL, OBJ, or STEP.
From there, the workflow follows several key steps:
- Design of the 3D model : The part is created using computer-aided design software (CAD), defining its shape, dimensions, and mechanical properties.
- Slicing the model : The file is processed by slicing software, which divides the model into hundreds or thousands of thin horizontal layers. It also generates the printing instructions (toolpath).
- 3D printing process : The printer builds the object layer by layer, following the digital instructions with high precision.
- Post-processing : Once printed, the part may require cleaning, curing, or finishing depending on the technology used.
Main 3D printing technologies
Different printers use different physical processes depending on the application:
- FDM (Fused Deposition Modeling)
Thermoplastic filament is melted and deposited layer by layer.
This is one of the most widely used technologies for prototyping and functional parts.
- SLA / DLP (Resin printing)
A liquid resin is solidified using a light source (laser or projector).
This method offers very high precision and smooth surface quality.
- SLS / SLM (Powder-based printing)
A powder (plastic or metal) is selectively fused using a laser.
This allows the production of strong, complex industrial-grade parts without support structures.
Each technology has its own strengths depending on the required mechanical, chemical, or biological properties.
Why 3D printers are so powerful
The value of a 3D printer lies in its ability to combine speed, flexibility, and precision.
- High design freedom : It enables complex geometries such as internal channels, lattices, or lightweight structures that are impossible with traditional manufacturing.
- Rapid iteration : Designs can be tested, modified, and reprinted very quickly, accelerating R&D cycles.
- Custom manufacturing : Each part can be unique without increasing production complexity.
- Efficient material usage : Material is only used where needed, reducing waste and improving sustainability.
3D printing at Lattice Services
At Lattice Services, 3D printers are not just production tools. They are integrated into a complete development workflow.
They are used for:
- prototyping medical devices
- validating functional designs
- testing biomaterial-based structures
- producing customised parts for R&D projects
- supporting innovation in medical engineering
This approach allows faster development of advanced solutions, especially in the field of regenerative medicine and medical devices.
From digital idea to physical reality
The 3D printer acts as the bridge between digital design and real-world application.
What starts as a simple file on a computer becomes a tangible object ready for testing, validation, or use in real conditions.
This direct transformation is what makes additive manufacturing such a disruptive technology in modern industry and healthcare.
Want to see what 3D printing can do for you?
Discover our world by exploring our website and following other episodes of the “Zoom on 3D printing” series.
