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From the knowledges of 3D printing service to specific order-related issues, find answers that can help you accelerate your innovation with 3DSPRO's comprehensive FAQs session.

What are the differences between SLA and SLS 3D printing?

SLA 3D Printing:

● Uses an ultraviolet (UV) laser to cure liquid photopolymer resin into solid parts layer by layer.

● Known for high precision and smooth surface finishes.

● Requires support structures during printing which must be manually removed during post-processing.

● Ideal for detailed prototypes, jewelry, and dental applications due to its fine resolution.

SLS 3D Printing:

● Fuses small particles of thermoplastic powder using a high-power laser to form solid objects.

● Produces parts with good mechanical properties, suitable for functional prototypes and end-use parts.

● Does not require support structures as the unsintered powder acts as support, allowing for complex geometries.

● Typically has a faster production process than SLA and is better suited for rapid prototyping.

While both SLA and SLS use laser technology, SLA is more focused on detail and aesthetics, whereas SLS is geared towards functional use with a faster turnaround. If you’re considering one of these technologies for your project, we can help you decide which is best suited for your specific needs based on the desired outcome and application. Contact us at

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