System construction space
900 x 600 x 900 mm
ABS, PC, ULTEM (PEI)
comparable with injection molding material, color white/yellowish (ABS)
2–5 working days
system in daily use
FDM describes the workpiece structure by extruding a molten, wire-shaped starting material. The layer thickness is 0.25 mm and a minimum wall thickness of up to 0.5 mm can be achieved. Generally, any meltable materials can be processed.
The material is heated via a heating nozzle (temperature slightly above the melting temperature) and applied to a carrier plate or to the previously applied layer. The carrier platform is then lowered to apply the next layer.
Support geometry for overhanging structures
Two heating nozzles, each with different wire rollers, are used to generate the model. One roller applies the support material, the other supports the actual construction of the master model. The support geometry is subsequently removed in a biodegradable water bath using ultrasound.
(1) Support or model material roller
(2) Heating head
Application area: Models
Until now, ABS (thermoplastic) and PC (thermoplastic) were predominantly used due to their low melting temperature. ULTEM (= brand name of General Electric = PEI = polyetherimide) has also been used as a usable FDM material alongside the other common types for several years now.
The FDM process is used to produce master models for plastic parts as well as models for use in lost-wax processes, such as investment casting, in this case using ABS.
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Fused Deposition Modeling (FDM)1zu1direkt: Our product range can be ordered online ...
|Test method||ABS||PC||Ultem 9085|
|Density [g/cm³]||ASTM D792||1.04||1.2||1.34|
|Modulus of elasticity [MPa]||ASTM D638||2413||1944–1958||2150–2270|
|Flexural modulus [MPa]||ASTM D638||2317||1800–2006||2500–2300|
|Flexural strength [MPa]||ASTM D638||61||68–89||68–112|
|Tensile strength [MPa]||ASTM D638||36||30–57||33–69|
|Notch impact strength [J/m]||IZOD Method A ASTM D256||139||28–73||48–120|
|Impact strength [J/m]||IZOD Method A ASTM D256||283||187–877||172–781|
|Compressive strength [MPa]||ASTM D695||65–193||87–181|
|Elongation [%]||ASTM D638||4||2||1.7|
|Softening point HDT @ 264 psi [°C]||ASTM D648||82||127||153|
|Therm. coefficient of linear expansion [µm/(K*m)]||ASTM E831||65.27|
Property as per Stratasys data sheet