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What is FDM :
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FDM also known as Fused Deposition Modeling is layered manufacturing
process. FDM offers functional prototypes with ABS, and other
materials. A thin bead of molten plastic is extruded through
the computer controlled nozzle, which is deposited on a layer-by-layer
basis to construct a prototype directly from 3D CAD data. The
technology is commonly applied to form, fit and function analysis
and concept visualisation. In addition, FDM can be used for
pattern generation and rapid manufacturing.
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| Advantages
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FDM
parts are strong and rigid makes them suitable for functional
testing
Cost
effective solution for small to medium size parts in shortest
lead time
Dimensional
stability is a key advantage of FDM prototypes, as opposed to
SLA.
Environmental
exposure do not alter the size of the part or its features.
ABS prototypes
demonstrate 80% of the strength of injection moulded ABS which
make them very suitable for functional testing and can be directly
used as finished production parts for certain applications.
Ideal for strong
parts exposed to temperature, water and many chemicals.
High level of
finish can be achieved by sanding and other post processing
techniques.
ABS parts can
be further machined, polished or electroplated.
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Disadvantages:
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FDM
parts have a ribbed appearance because of plastic is extruded
in horizontal layers, which can be easily sanded and polished
to smooth finish.
Extensive
snap and living hinge features could fail due to process and
material limitations.
FDM
could be a slower process for very large build volume parts
subject to part complexity and shape. Thin wall and shell parts
are faster to make than solid builds.
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Build
Size:
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203 x 203 x 305mm
Large parts can be easily made in sections and joined together
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Feature
Size:
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Minimum wall section or feature is recommended
not to be smaller than 0.8mm. If you have any Ribs, Bosses,
Lettering or wall sections less than recommend size, may not
form at all.
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Layer
Thickness:
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Generally FDM parts are made with 0.25 mm layer
thickness.
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Price
Factor: |
Cost effective for shell structured parts rather
having thick and solid build volume. Very attractive pricing
for hand held to medium size parts.
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Materials:
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Please check :: FDM
specification link :: for FDM material properties.
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How FDM
Works: |
Please check :: Help + FAQ
:: Link for detailed information about FDM process.
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