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What is SLA :
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SLA also known as Stereolithography, provides the greatest accuracy
with an excellent surface finish. Process works by curing liquid
photopolymers when exposed to ultraviolet light. SLA is limited
in its range of applicable materials but still widely used for
conceptual designs, Product verification, Pattern making, Form/Fit
analysis and light functional testing.
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Advantages
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Very
Accurate process, suitable for close tolerance and form fit
parts
Excellent
surface finish, suitable for conceptual and presentation designs
Excellent feature
detail, suitable for making master models for vacuum casting
process
Translucent
or Transparent parts can be made by using special resins and
finishing techniques.
SLA
parts can be bead blasted, painted, textured finished, electroplated.
SLA Quick cast
parts can be directly used for Investment casting patterns.
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Disadvantages:
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Parts
are fragile need to be careful before using for thin wall sections
and only recommended for light functional testing. Generally
not recommended for snap fitting or living hinge features.
Most of SLA parts
are sensitive to heat, moisture and chemicals. Not recommended
for high humidity or excessive temperature applications.
SLA may not be
the cheapest option for prototyping needs, some of the factors
determining the price are: Volume, overall size specially height,
complexity, surface finish and postprocessing needed.
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Build
Size:
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508 x 508 x 600mm
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 SLA parts are made with 0.127mm layer
thickness
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Price
Factor: |
Multi pieces of same part are always economical
than single piece. Even various SLA models ordered at the same
time as a single batch are much cheaper to make than ordering
separately.
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Materials:
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Please check :: SLA
specification link :: for downloading different SLA material
property sheets.
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How SLA
Works: |
Please check :: Help + FAQ
:: Link for detailed information about SLA process.
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