SLS 3D Printing Services
Fastest delivery within one day.
Supports high resolution and various materials.
Tolerance accurate to ±0.2 mm.
Our SLS 3D Printing Services
SLS 3D printing (Selective Laser Sintering) is an industrial-grade additive manufacturing technology. It
utilizes a high-power laser (such as a CO₂ laser) to selectively sinter thermoplastic powder layer by layer
based on sliced CAD data. The laser heats the powder particles to a sintering temperature, melting them into
solid layers. These solid layers are built sequentially to form 3D parts with strong mechanical properties.
This process does not require additional support structures because the unsintered powder naturally supports the
part during printing. SLS 3D printing is ideal for manufacturing high-precision, complex parts and has a wide
range of applications across various fields.
Production Capacity
345mm*345mm*420mm
1-3 business days
±0.2-0.3mm/100mm
25-100 um
How does SLS 3D Printing Work？
SLS 3D Printing
SLS 3D printing begins by slicing the 3D model, setting layer thicknesses to meet accuracy and surface
quality requirements, and then sending the data to the SLS printer.
In the initial stage, a recoating system applies a thin layer of powder to the powder bed. Based on the
slice data, a laser selectively scans the powder surface, heating and sintering the powder to form the first
molding layer. Subsequently, the powder bed is lowered to the set layer height, the feed system spreads a
new layer of powder, and the laser continues scanning the next cross-section.
Through repeated powder spreading and sintering, the 3D component is gradually built up. Finally, the part
is manually removed, excess unsintered powder is cleaned, and necessary post-processing steps are performed.
Advantages of HLH SLS printing
High-Efficiency Mass Production
SLS 3D printing enables intelligent part arrangement within the build chamber, allowing multiple components to be printed simultaneously. This maximizes space utilization, increases efficiency, and reduces costs, making it ideal for small to medium-sized prototypes and custom parts.
No Support Structure Required
During SLS 3D printing, unsintered powder can support the parts without the need for additional support structures. Compared to FDM and SLA, this not only saves time on support removal but also reduces the risk of surface damage during removal.
Supporting Complex Structures
SLS technology can easily handle complex geometries that challenge traditional manufacturing methods, including lattices, hollow structures, and interlocking components. With unparalleled design flexibility, it is an ideal solution for innovative structural parts.
High Material Recycling Rate
SLS 3D printing features a powder recycling system. Compared to other technologies, unsintered powder can be reused after impurity screening, reducing material waste and lowering raw material procurement costs.
SLS Material Options
PA 11 Black (PA 850) offers ductility and flexibility without sacrificing tensile strength and temperature resistance. These properties make PA 850 a versatile material widely used in functional and moving parts.
PA12 Black offers comprehensive excellent mechanical properties and chemical resistance, making it ideal for functional parts and prototyping.
PA 12 White is the material of choice for general applications such as functional and end-use parts. PA 650 is the strongest unfilled nylon material, with a slightly higher hardness than PA 11 Black.
PA12 40% Glass Fiber Reinforced Plastic (PA614-GS) is a PA powder filled with glass beads, giving it rigidity and dimensional stability. This material is an ideal candidate for parts requiring long-term wear resistance. Due to the addition of glass additives, its impact strength and tensile strength are reduced compared to other nylons.
Natural polypropylene materials possess the highest chemical resistance among SLS and MJF materials. This tough, durable yet flexible material resists most acids and is a lightweight material option.
SLS 3D printing post-processing
3D printing surface finishes enhance the appearance, texture, and performance of printed parts. From smoothing to coating, surface finishes improve aesthetics, durability, and functionality, preparing parts for final use or display.
Sandblasting
Blasting fine sand particles onto the surface of the part to remove surface burrs and improve surface quality.
Polishing
Mechanical or chemical polishing to make the surface of the parts smoother.
Heat treatment
Improve the strength and stability of the parts by heat treatment process.
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What Customers are Saying?
Fast and Reliable, Defnitely My First Choice!
"As the owner of a small machining shop, I'm deeply impressed by HLH Model Tech's effciency and reliability. They not only respond quickly tomy urgent needs but also deliver consistently high-quality parts.Especially their customer service team, who always swiftly resolves any issues I face. It's truly a hassle-free experience!"
Custom Transmission Belts, Perfectly Matched!
“HLH Model Tech has exceeded our expectations in delivering high-quality CNC machined parts. Their professional skills and processing production capabilities have seamlessly connected our production needs. ”
Worth Every Penny!
"When choosing suppliers, value for money is always my top consideration. HLH Model Tech not only offers reasonable prices but also ensures exceptional quality. Their team is adept at balancing cost- effectiveness, consistently delivering results that exceed expectations within our budget. They are a lifesaver for our financial planning!"
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