Introduction:
Through Selective Laser Sintering (SLS), vowin.cn/' target='_blank'>rapid prototypes are produced from production materials. The parts typically have the highest strength. A CO2 laser sinters powdered material layer by layer to create a durable, solid object. The prototype can be used for functional testing in almost all applications including functional prototypes, electronic packaging, high-temperature components, snap fits, and living hinges because they are constructed from real engineering materials.
When durability and/or high heat tolerance are required, SLS can produce parts which closely represent the physical properties of the production material.
Highlights:
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Patented in 1989.
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Considerably stronger than SLA; sometimes structurally-functional parts are possible.
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Laser beam selectively fuses powdered materials: Nylon, elastomers, and soon metal.
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Advantage over SLA: The variety of materials, and the ability to approximate common engineering plastics.
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No milling step, so accuracy in z can suffer.
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Process is simple: No milling or masking steps are required.
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Living hinges are possible with the thermoplastic-like materials.
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The surface will be powdery and porous unless sealant is used. Sealant also strengthens the part.
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Uncured material is easily removed after a build by brushing or blowing it off.
Applications:
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Limited number of prototypes needed (1-10).
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Form and fit testing
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Functional testing
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Field testing
