Fused Deposition Modelling (FDM) Providers
Fused Deposition Modelling extrudes thermoplastic filament through a heated nozzle to build parts layer by layer. FDM is one of the most widely used AM processes, supporting materials from PLA and ABS to engineering-grade PEEK and carbon-fibre composites. It is ideal for functional prototypes, jigs, fixtures, and low-volume production. Browse FDM providers verified for material range, dimensional accuracy, and surface finish quality.
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How Fused Deposition Modelling works
FDM — also called FFF (Fused Filament Fabrication) in the open-source and non-Stratasys world — extrudes a 1.75 mm or 2.85 mm thermoplastic filament through a heated nozzle at 180–400°C, depositing a bead onto the build plate or the previous layer. The nozzle traces each layer's outline and infill under CNC motion control, the plate lowers (or the gantry rises), and the next layer fuses onto the last. Layer heights of 100–300 µm are typical for production work; 50 µm is achievable on fine-detail systems at the cost of build time.
The defining feature of FDM is material range. The process runs commodity thermoplastics (PLA, ABS, PETG), engineering polymers (PC, PA-nylon, ASA), high-performance semi-crystallines (PEEK, PEKK, PPSU), fibre-reinforced composites (carbon-filled, glass-filled, Kevlar), ESD-safe and flame-retardant grades for electronics and aerospace, and soluble supports (PVA, HIPS, SR-30) that enable complex overhanging geometry. No other polymer AM process comes close on material breadth. The trade-offs are anisotropic strength (weaker in Z than XY), visible layer lines in the as-built state, and support marks on overhanging features that usually need post-processing.
Common FDM applications
Manufacturing jigs, fixtures, and tooling aids
Assembly jigs, drill guides, inspection fixtures, end-of-arm robot tooling, and check gauges — produced in days in ABS, PC-ABS, or glass-filled nylon instead of weeks of CNC machining.
Functional prototypes in production-equivalent materials
Design-validation parts in PC, PA-nylon, or ABS that mirror the behaviour of the intended injection-moulded part — including living hinges, snap-fits, and thread engagement.
Aerospace cabin and interior hardware (Stratasys ULTEM)
Flight-certified interior parts — bezels, ducting, brackets — in ULTEM 9085 and 1010 under Stratasys's FAA-qualified processes. A substantial share of new commercial aircraft fly with FDM interior components.
PEEK and PEKK parts for medical, oil & gas, and semiconductor
High-performance semi-crystalline parts for sterilisable medical instruments, wafer-handling fixtures, and high-temperature chemical-handling components — typically on heated-chamber Roboze, 3DGence, or Intamsys systems.
Large-format architectural and marine parts
Multi-metre parts on BigRep, Weber Additive, or Massivit systems — furniture, marine mock-ups, automotive interior bucks, film / TV props.
ESD-safe enclosures and semiconductor hardware
Parts in ESD-PEEK, ESD-PC, and carbon-filled nylon for electronics assembly lines, static-sensitive environments, and wafer-handling tooling.
Materials commonly processed by FDM
PLA
The entry-level material — biodegradable, low-warp, easy to print. Suited to visual prototypes and non-load-bearing parts. Glass transition ~60°C rules it out for functional parts in warm environments.
ABS and ASA
General-purpose engineering thermoplastics — ABS for indoor functional work (can be acetone-vapour-smoothed to gloss), ASA for UV-stable outdoor applications.
PC (Polycarbonate) and PC-ABS
High-strength, high-temperature (~115°C service) engineering polymer — standard for jigs, fixtures, and functional prototypes where stiffness and impact matter.
Nylon (PA-6, PA-12) and Glass/Carbon-Filled Nylon
Tough, chemically resistant engineering material. Filled grades (30% glass, 15–30% carbon) reach 2–4× base stiffness and are standard for fixtures and load-bearing brackets.
PEEK, PEKK, and PPSU
High-performance semi-crystalline polymers with continuous-use temperatures above 200°C, chemical resistance, and mechanical strength approaching aluminium. Requires heated-chamber (>200°C ambient) machines for fully crystalline parts.
ULTEM 9085 / ULTEM 1010 (PEI)
Flame-retardant, high-strength polyetherimide — the standard aerospace-cabin FDM material. Stratasys-qualified under FAR 25.853 for flight hardware.
TPU / TPE (flexible filaments)
Shore 80A–95A elastomers for gaskets, dampers, and soft-touch grips. Direct-drive extruders required; tight bends can slow effective build speed.
When to choose FDM over SLS, MJF, or CNC machining
FDM vs SLS / MJF: FDM wins on material range (PEEK, ULTEM, ESD-safe, flame-retardant), build envelope (multi-metre on large-format machines), single-part cost for medium-large parts, and field-service suitability (FDM machines are simpler to operate than powder bed systems). SLS / MJF win on dimensional consistency, isotropic mechanicals, fine feature resolution, and small-to-mid batch economics.
FDM vs CNC machining: FDM becomes economic when geometry is complex (internal channels, organic shapes), volume is low (under ~20 units), or material compatibility is the constraint (FDM can produce parts in plastics that are very difficult or slow to machine). CNC wins on tolerance, surface finish, and per-part cost for simple-geometry parts above ~10 units.
Industrial vs desktop FDM: the market splits sharply between desktop systems (Prusa, Bambu Lab, Creality) that serve hobby and low-stakes prototype work, and industrial heated-chamber systems (Stratasys F-series / Fortus, Roboze, 3DGence, Intamsys) that deliver repeatable engineering-grade parts with validated material chains of custody. For production or regulated work, specify industrial platforms.
Lead time and cost expectations for FDM
Standard engineering-grade FDM parts typically deliver in 3–7 working days from order. Rush services (24–48 hour) are widely available at a premium. PEEK and ULTEM work runs longer (5–10 days) due to post-print annealing for crystallinity development. Large-format parts over 1 m can take 1–3 weeks of build time alone.
Indicative pricing for a 100 cm³ ABS or PC-ABS part: £25–£60 / €30–€70 on an industrial machine. PEEK runs roughly 6–10× that (filament cost is £800–£2,000/kg), ULTEM 3–5× (FDM PEEK / ULTEM pricing usually beats the equivalent machined PEEK on cost below ~20 units). Large-format architectural or marine parts are quoted by build hour (typically £25–£80 / €30–€95 per build hour).
Related processes & materials
Frequently asked questions
What is the difference between FDM and FFF?
They describe the same process. "FDM" (Fused Deposition Modelling) is Stratasys's trademarked term — coined by co-founder Scott Crump in 1989. "FFF" (Fused Filament Fabrication) is the open-source and non-Stratasys equivalent. For sourcing, treat them as interchangeable; industrial Stratasys platforms (F-series, Fortus) use "FDM", everyone else (Prusa, Bambu, Raise3D, BigRep, Roboze) typically uses "FFF".
How strong are FDM parts compared to injection-moulded equivalents?
In-plane (XY-axis) tensile strength of well-printed engineering FDM parts reaches 70–95% of the injection-moulded equivalent. Across layer lines (Z-axis) it drops to 40–70% depending on material and print parameters. This anisotropy means part orientation and load direction have to be designed for — loads should flow along the printed layers, not across them.
What tolerances are achievable with industrial FDM?
Typical industrial FDM dimensional tolerance is ±0.15 mm or ±0.2% of the dimension, whichever is greater. Stratasys Fortus systems reach ±0.1 mm on well-controlled features. Mating features and critical dimensions are typically CNC-finished after print. Surface roughness is 10–25 µm Ra depending on layer height and orientation.
Can FDM print PEEK?
Yes — but only on machines with heated chambers (>200°C ambient), high-temperature extruders (>400°C), and carefully qualified annealing protocols. Standard office-grade FDM machines cannot produce crystalline PEEK. Dedicated platforms include Roboze Argo 500 / 1000, 3DGence INDUSTRY F421, Intamsys Funmat Pro 610HT, and Stratasys F900 with the PEKK head.
How do I remove support material from FDM parts?
Three routes: <strong>breakaway supports</strong> (snapped off manually, leaving a rough witness surface); <strong>soluble supports</strong> (PVA in water, HIPS in limonene, SR-30 in alkaline solution — cleanest finish, slower post-processing); <strong>no-support designs</strong> (oriented and designed to avoid overhangs). Industrial dual-extruder machines run soluble supports as the default for complex geometries.
Is FDM suitable for production runs?
For low-to-mid volume production — typically 10 to 1,000 units per year — FDM is widely used in aerospace, medical, and industrial sectors. Stratasys has published case studies of aerospace cabin parts produced in quantities of several thousand per year via FDM. Above that volume, the per-part economics usually favour injection moulding (if tooling can be justified) or MJF / SLS (if the geometry suits powder bed).