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Stereolithography SLA 3D Printing
Rapidaccu delivers precision SLA 3D printing with exceptional surface quality and fine feature resolution. Our stereolithography technology uses UV lasers to cure liquid resin layer by layer, producing smooth, accurate parts ideal for visual prototypes and intricate designs.
The SLA Process
Stereolithography uses a high-powered UV laser to selectively cure and solidify photopolymer resin in a vat, building your part from the bottom up with micron-level precision.
Laser Scanning
UV laser traces each layer cross-section on resin surface
Layer Curing
Resin solidifies where laser contacts, forming solid layer
Platform Lowering
Build platform descends by one layer thickness
Repeat & Finish
Process repeats until part complete, then cleaned and cured
SLA Material Portfolio
Standard Resin
General-purpose photopolymer for visual prototypes and concept models with excellent detail reproduction.
- Smooth surface finish
- Available in multiple colors
- Cost-effective option
Tough Resin
Engineering-grade material with high impact resistance and durability for functional testing.
- ABS-like properties
- Impact and fatigue resistant
- Functional prototyping
High-Temp Resin
Thermal-resistant material withstanding temperatures up to 238°C for injection molding and hot air/fluid testing.
- HDT: 238°C @ 0.45 MPa
- Molding patterns
- Hot fluid testing
Clear Resin
Transparent material for lenses, light guides, and applications requiring optical clarity.
- High transparency
- Polishable to glass-like finish
- Optical applications
Flexible Resin
Rubber-like material for gaskets, seals, and parts requiring elasticity and compression.
- Shore A hardness: 70-90
- High elongation at break
- Seals and gaskets
Dental Resin
Biocompatible material for dental models, surgical guides, and orthodontic appliances.
- FDA/ISO certified
- Biocompatible Class I
- Sterilizable
Key Benefits of SLA Technology
Why choose stereolithography for your precision parts
Exceptional Detail
Layer resolution down to 25 microns enables intricate features, fine text, and complex geometries with outstanding surface quality.
Smooth Surface Finish
Minimal post-processing required. Parts have smooth surfaces ideal for painting, plating, or direct use in presentations.
High Accuracy
Dimensional accuracy of ±0.1mm or ±0.002 inch per inch enables tight tolerances and precise fit verification.
Isotropic Properties
Parts have consistent mechanical properties in all directions, unlike FDM where layer orientation affects strength.
Wide Material Range
Specialized resins for specific applications: clear, tough, flexible, high-temperature, castable, and biocompatible.
Complex Geometries
Create hollow structures, undercuts, and internal features without assembly. Support structures easily removed.
Technical Specifications
Design Guidelines
- Minimum feature size: 0.4mm for standard resins
- Minimum hole diameter: 0.5mm recommended
- Support structures required for overhangs
- Hollow parts need drainage holes 3.5mm+
Post-Processing
- Alcohol bath to remove uncured resin
- UV post-curing for full mechanical properties
- Support removal and sanding available
- Painting, plating, and coating services
Ideal Applications for SLA
Visual Prototypes
High-quality presentation models with smooth surfaces for client reviews and marketing materials.
Form & Fit Testing
Accurate dimensional verification for assembly validation and ergonomic evaluation.
Master Patterns
Investment casting patterns with excellent surface finish and dimensional accuracy.
Medical Models
Surgical planning models, dental aligners, and biocompatible medical devices.
Jewelry & Art
Intricate designs with fine details for direct casting or master pattern creation.
Microfluidics
Precise channels and small-scale features for lab-on-chip and research applications.
Why Choose Rapidaccu for SLA?
15 years of excellence in precision additive manufacturing
Proven Expertise
Over 15 years serving international clients with precision SLA printing. Our experienced team ensures consistent quality and reliable delivery.
Advanced Equipment
Industrial SLA machines with large build volumes and multiple material options for diverse application requirements.
Quality Assurance
Comprehensive inspection and dimensional verification ensure parts meet your exact specifications and tolerances.
Engineering Support
Free DFM review and material recommendations to optimize your designs for SLA manufacturing success.
Request Your SLA Quote
Upload your CAD files for instant pricing and expert material consultation
Manufacturing Location
Rongli Industrial Park, Dalang
Longhua District, Shenzhen, China