FDM — Fused Deposition Modeling
FDM (Fused Deposition Modeling), also called FFF, builds parts by extruding melted thermoplastic filament layer by layer. It is the most accessible and cost-effective 3D printing process — ideal for sturdy prototypes, jigs, fixtures, and functional parts.
How FDM works
A spool of thermoplastic filament is fed into a heated nozzle that melts it to a semi-liquid state. The printhead moves across the build platform, depositing a thin bead of plastic that traces each cross-section of the model. As one layer finishes, the platform steps down and the next layer is printed directly on top, fusing to the one below as it cools.
Because parts are built up in stacked layers, FDM is fast and economical, but layer lines are visible and parts are slightly weaker in the vertical (Z) direction. Overhangs are printed onto sacrificial support structures that are removed afterward.
What FDM is best for
- Functional prototypes that need to be handled and tested
- Jigs, fixtures, and manufacturing aids
- Enclosures, housings, and brackets
- Large parts where cost-per-volume matters
- Concept models in engineering plastics
Strengths & trade-offs
Strengths
- Lowest cost per part
- Widest range of engineering thermoplastics
- Durable, impact-resistant parts
- Large build volumes available
- Fast turnaround for simple geometry
Trade-offs
- Visible layer lines on the surface
- Weaker along the layer (Z) axis
- Limited fine feature detail
- Support marks on overhangs
Materials available in FDM
We print the full range of FDM filament families — from everyday PLA to engineering, flexible, fibre-reinforced, and soluble-support materials. Browse the materials library to filter by property, or just ask for a specific filament when you upload.
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