Fused deposition modelling
FDM printing is an additive manufacturing method based on the controlled extrusion of thermoplastic filaments. The technology is widely used for robust prototypes, functional parts and cost-effective production at short lead times.
By building parts layer by layer with molten filament, FDM can provide structurally sound components with reproducible geometry. It is suitable for both simple and more technically complex geometries, depending on the choice of materials and settings.
High material strength
Versatile
Rapid prototyping
Chemical resistance
What is FDM printing?
FDM is a layer-based method where a heated filament is fed through a nozzle and shaped according to a digital model. The controlled deposition of the material provides a solid structure and the process is characterised by high availability and flexibility in material selection.
The method can handle both simple and technically more complex geometries. It is often used when the objective is to produce parts to be tested, assembled or integrated into mechanical systems. For designs where fast iteration and cost-effective production are important parameters, FDM is a useful choice.
Advantages of FDM printing
- Structurally sound elements
- Short lead times
- Comprehensive range of materials
- Production capacity from single components to series
- Manufacturing larger geometries than many other methods allow
How does FDM printing work?
The process starts with slicing the model into layers. The filament is heated to a defined temperature and fed through a nozzle that follows the layer orientation of the model. Each layer is laid on top of the previous one and cooled in a controlled manner. This creates a component whose structure and geometry are based on the chosen settings.
After printing, support structures are removed when used. The component can then be processed by grinding, drilling or surface modification depending on requirements.
FDM compared to MJF, SLS and SLA
- MJF provides a higher surface roughness and more isotropic structure. This is used when the requirements for precision and material properties are more advanced.
- SLS offers good dimensional stability and advanced geometrical freedom. The technology is relevant when internal channels, complex structures or specific nylon polymers are needed.
- SLA provides a very smooth surface and is often used for visual modelling or small tolerance parts that should not be subjected to major mechanical stress.
Materials for FDM printing
PLA
A thermoplastic material with good dimensional stability. Used for prototypes, enclosures and models that are not exposed to high thermal stress.
PETG
A tough material that combines chemical resistance and flexibility. Used for components that need to maintain strength in varying environments.
TPU
An elastic material for flexible components such as seals, vibration damping parts and flexible structures.
ABS
A polymer with good impact and heat resistance. Suitable for functional parts in technical environments.
Nylon
Nylon with glass-filled reinforcement that provides high stiffness and improved heat resistance. Used for structures where mechanical loading or structural stability is key.
Applications of FDM printing
- Functional prototypes
- Jigs and fixtures
- Enclosures and plastic technical parts
- Spare parts in small and medium series
- Components that require high build volumes or rapid iteration
Contact us
Do you have questions about FDM or other additive manufacturing techniques and how they can be used in development or production projects? Fill in the form or get in touch by email or phone, and we'll be happy to help clarify the differences, possibilities and limitations.
