SLA 3D Printing - High Resolution Resin Prototypes

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What is SLA Printing?

High-Precision Rapid Prototyping Technology

SLA (Stereolithography Apparatus) is a 3D printing technology that uses ultraviolet laser to solidify liquid photopolymer resin layer by layer. Its working principle is to precisely scan the resin surface with a laser beam, causing specific areas to solidify and form a complex part through layer-by-layer stacking.

SLA printing is renowned for its ultra-high precision (±0.05-0.1mm) and smooth surface quality, making it particularly suitable for creating detailed models, jewelry molds, dental restorations, and other products with high detail requirements. This technology supports a variety of engineering resin materials, including high-temperature resistant, flexible, and biocompatible resins, and is widely used in the medical, automotive, and consumer electronics industries.

Compared to traditional processes, SLA can complete the entire process from design to finished product within 24 hours, significantly shortening the product development cycle and making it an ideal choice for prototype verification and small-batch production.

Core advantages of SLA printing

SLA (Stereolithography) technology precisely cures liquid resin using ultraviolet laser, enabling the production of complex parts with smooth surfaces and fine details, with a tolerance of ±0.1mm. It is the preferred process in fields such as medicine, dentistry, and precision manufacturing. Its core advantage lies in:

Ultra-high precision

Capable of presenting minute features as small as 0.05mm (such as jewelry textures, vascular models)

Smooth surface

Achieves Ra0.6μm mirror effect without the need for polishing, directly used for appearance verification

Multi-material compatibility

Covers biocompatible resins, high-temperature resistant (200℃) and flexible materials

Efficiency revolution

Compared to traditional CNC, the delivery speed of complex structural components is increased by more than 5 times.

Our SLA 3D Printing Service

The SLA Process Overview

Qiying adopts a full-process digital control system to ensure that every step from the document to the final product complies with the ISO 9001 quality standards, providing customers with high-precision and highly consistent SLA printing services. A Comprehensive Analysis of the Entire Process of SLA Light-Curing 3D Printing:

Pre-processing stage

3D model optimization: Fixing file flaws, optimizing support structure
Printing parameter settings: Adjusting layer thickness (0.05 - 0.1mm) and exposure time according to the characteristics of the part

Printing process

Laser precise scanning: Ultraviolet laser (typically 355nm) solidifies the liquid photopolymer layer by layer according to the cross-sectional outline
Automatic elevation: The forming platform descends layer by layer with a step precision of 0.05 - 0.15mm

Post-processing procedures

Cleaning: Ultrasonic cleaning with isopropyl alcohol to remove residual resin on the surface
Secondary curing: UV post-curing oven to enhance material properties
Fine processing: Support removal, grinding and polishing, painting, etc. for surface treatment

99.2%On-Time Delivery Rate

99.3%Yield

99.8%Customer Satisfaction Rate

SLA 3D Printing Materials

SLA (laser sintering) 3D printing uses photo-sensitive resin as the raw material and is formed through ultraviolet light curing. Different resins have unique mechanical properties, thermal resistance, and application scenarios.

Standard Resin (General Purpose Resin) Feature

High surface finish (Ra < 1μm), suitable for appearance verification Medium strength (tensile strength 40-60 MPa), with relatively high brittleness Applications: Concept models, display prototypes, rapid mold master molds