Introduction:
SLA is the most accurate and versatile rapid prototyping technology. SLA prototypes are constructed from a liquid photopolymer that is selectively cured using an ultraviolet laser.
Due to the accuracy of this processreproduce fine details, SLA models are perfect for use as concept models, form-and-fit studies, functional testing, and as master patterns for a variety of vowin.cn/en/News/news1251.html' target='_blank'>vowin.cn/' target='_blank'>molding techniques.
Highlights:
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It is the original Rapid Prototyping technique, and still the most commonly used.
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It is comparatively low-cost.
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It utilizes a light-sensitive liquid polymer.
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It requires post-curing since laser is not intense enough to fully cure.
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Extended curing can cause warping.
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Parts are somewhat brittle and have a tacky surface.
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There is no milling process, so dimensional accuracy can suffer.
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Support structures are typically required.
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The process is simple: Neither milling nor masking steps are required.
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Uncured material should be expected to emit toxic fumes. Thorough ventilation is necessary.
Applications:
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When a low number of prototypes is needed (1-10).
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Form and fit testing.
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Functional testing (for example, snap-fit).
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Plastic piece rapid-tooling patterns.
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Metal piece rapid-tooling patterns.
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Focus group and presentation models.
