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Stereolithography (SLA)
3D Printing Service
Print your SLA parts with fast turnaround and wide variety of resin materials as fast as 2-3 days!
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Overview: How SLA 3D Printing Works?
Stereolithography (SLA) is a powerful 3D printing technique ever developed. It produces highly accurate and high-resolution, detailed parts. It’s used directly in end-use, low-volume production, or for prototyping. Unionfab offers over 30 uniquely engineered SLA materials to enable products to the market at reduced production costs.
Why Choose SLA 3D Printing With Unionfab
- Unionfab can provide customers with various SLA 3D Printing materials, including many high- performance materials. At the same time, we jointly develop unique materials for aerospace, medical and other applications with partners to help our customers expand the application scope and depth of additive manufacturing.
- Unionfab has large-scale Industrial-level SLA 3D printers with a max build volume of 2100 x 700 x 800mm.
- Unionfab provides rich post-processing options for SLA parts, and we have the capacity to achieve the best sample effect for you.
Features of SLA 3D Printing
Surface & Detail
SLA has tolerances of +/-.004” per inch, and resin surface is ideal for post-processing like polishing and painting.
Geometry
SLA allows to integrate multiple components as well as thin-walled objects and intricate geometries that traditional method won’t be capable of.
Material Selection
There're various material with special properties like toughness, heat resistance, flexibility, which simulates the end products.
Durability
Photopolymers are not stable over time and most resins don’t have balanced impact/heat resistance.
Cose Saving
SLA is one of the cheapest method for rapid prototyping while preserving a good surface quality and accuracy.
Turnaround
SLA 3D printed parts do not require tooling which reduces the manufacturing lead time from weeks to days, allowing for faster innovation and speed to market.
Scalable Volume
Multiple, identical parts can be built on a single platform at one time, greatly increasing production efficiency.
Scale Effect
The unit cost and lead time will not be reduced as much as casted or molded pa
SLA Design Guidelines
| US | Metric | |
| Max Size | 82.68 in. x27.55 in. x31.50 in. | 2100 mm x 700 mm x 800 mm |
| Normal Size | 31.50 in. x31.50 in. x 21.65 in. | 800 mm x 800 mm x 550 mm |
| Standard Size | 23.62 in. x 23.62 in. x 15.75 in. | 600 mm x 600 mm x 400 mm |
| US | Metric | |
| Normal Resolution | 0.0039 in. | 0.1mm |
| High Resolution | 0.0028 in. | 0.07mm |
| Micro Resolution | 0.0020 in. | 0.05mm |
| US | Metric | |
| Normal Resolution | X-Y: 0.010 in. Z: 0.016 in. | X-Y: 0.254mm Z: 0.406mm |
| High Resolution | X-Y: 0.005 in. Z: 0.016 in. | X-Y: 0.1016mm Z: 0.406mm |
| Micro Resolution | X-Y: 0.0025 in. Z: 0.008 in. | X-Y: 0.0508mm Z: 0.203mm |
SLA Minimum Wall Thickness
Thin Wall >= 0.7 mm
SLA Tolerances
Standard Tolerance: L < 100 mm: ±0.1 mm；L≥100 mm: ±0.1% x L
Z-Axis Tolerance: ≤±0.08mm.
| Standard | Support remove, polish make a smooth surface, no visible layer lines. |
| Custom | Soft-touch paint, clear part finishing, painting, masking, color matching, decals/graphic, and texture finishes are available. |
SLA Available Materials
Standard Resin
Standard Resin has excellent surface detail and white texture and is the most commonly used resin with good dimensional accuracy. It’s suitable for pipes, buckles, electronic product casings, automobile casings, instrument panel components, etc.
SLA
600x600x400mm
White/Black
Rigid Resin (White)
Rigid Resin has high hardness, smooth surface, detail expression, dimensional stability, strong chemical resistance and high-precision. Its products can be used in high-humidity environments.
SLA
800x800x550mm
White
High-temp-220D Resin
High-temp-220D Resin is a resin specially designed for SLA 3D printing. It offers excellent heat resistance, with a heat deflection temperature of up to 227℃ after simple post-processing.
SLA
600x600x400mm
Beige
Somos Taurus Resin
Somos Taurus Resin is an extremely durable and high temperature resistant stereolithography (SLA) material that allows expansion into new prototype and end-use applications.
SLA
600x600x400mm
Black
Somos Ledo Resin
Somos Ledo Resin is a tough, high-performance material ideal for prototyping and functional testing. This material integrates easily into production cycles for design testing, ensuring parts meet functional requirements before full-scale production.
SLA
600x600x400mm
White
Transparent Clear Resin
SLA photosensitive resin with high transparency and low viscosity. The components are built at a cost of transparency, excellent strength and toughness, high precision and good dimensional stability.
SLA
800x800x550mm
Transparent
Casting Resin
As one of the industry’s most popular materials, Casting Resin is the clear solution for numerous applications. Whether you’re a designer looking for highly detailed parts with superior clarity and water resistance, or an engineer focusing on durability for functional testing, Casting Resin mimicks the look and feel of clear thermoplastics, such as ABS and PBT.
SLA
600x600x400mm
Optically Clear, Near Colorless
High Detail Resin
High-detail resin is a rigid opaque photo-polymeric liquid. Using extremely thin layers (32 µm), the material can print accurate and detailed parts without post-processing. Brown opaque liquid resin, good detail performance is suitable for printing art sculpture products.
SLA
600x600x400mm
Gray/Brown
Tough Resin
Tough Resin has a bright green appearance. It has high hardness, high strength, and good toughness, which is suitable for functional testing and processing with high requirements on toughness.
SLA
1800x900x600mm
Bright Green
High-temp-150D Resin
High-temp-150D Resin is a red, transparent, low-viscosity, liquid stereolithography resin that produces molded parts with excellent high temperature resistance, the use temperature of the molded part is 150℃ without load.
SLA
600x600x400mm
Red
Translucent Resin
SLA photosensitive resin with high transparency and low viscosity. The components are built at a cost of transparency, excellent strength and toughness, high precision and good dimensional stability.
SLA
800x800x550mm
Translucent
Nylon-like Resin
The Nylon-like Resin is a type of resin material with outstanding high-temperature resistance, combining strength and toughness, making it suitable for model making in environments requiring such resistance. This material can be used in temperature conditions ranging from 60°C to 100°C.
SLA
600x600x400mm
White
Available Finishes
Default：
In addition to the removal of support structures, the part surface is media blasted to provide a uniform finish.
Other：
· Paint glossy
· Paint matte
· Silk screening
· Dyeing
· Vacuum plating gloss
· Vacuum plating matte
· Polishing
* Want to custom the finish you need? Request in the quoting tool, we’ll evaluate your finishes on a case-by-case basis.
SLA 3D Printing Applications
Prototypes
With SLA, the prototype can be made using nylon material with great functionality. Fast turnaround makes it a good choice for functional prototyping.
Customized Products
The speed and versatility of SLA let variable production of customized gifts/samples for different users become possible.
Batched Products
SLA can be applied to make high-quality small batched products from 1-10,000 units, ideal for small businesses that wishes to test the market’s reaction to their newly developed products.
The Production Capacity of Unionfab
SLA 3D Printing
for Various Industries
Automotive
Automotive
Automotive
Automotive
Automotive
