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 cncmachine.ltd/en/News/news1251.html’ target=’_blank’>cncmachine.ltd/’ target=’_blank’>Molding techniques.
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Highlights:
- It is the original Rapid Prototyping technique, and still the most commonly used.
- It is comparatively low-cost.
- It utilizes a light-sensitive liquid polymer.
- It requires post-curing since laser is not intense enough to fully cure.
- Extended curing can cause warping.
- Parts are somewhat brittle and have a tacky surface.
- There is no milling process, so dimensional accuracy can suffer.
- Support structures are typically required.
- The process is simple: Neither milling nor masking steps are required.
- Uncured material should be expected to emit toxic fumes. Thorough ventilation is necessary.
Applications:
- When a low number of prototypes is needed (1-10).
- Form and fit testing.
- Functional testing (for example, snap-fit).
- Plastic piece rapid-tooling patterns.
- Metal piece rapid-tooling patterns.
- Focus group and presentation models.