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Our SLA 3D printing service
Use Rapid Protos advanced equipment and certified SLA 3D printing manufacturing partners to immediately obtain high-resolution 3D prints, whether it is a prototype with a large number of details or mass production, we can help you complete it quickly. You just need to upload your part to get a free quote fast, we stock a large range of prototype and industrial resin materials, and can print parts in as little as 1 day.
What is SLA 3D Printing?
Stereolithography (SLA), SLA technology is part of the vat photopolymerization printing family, which uses light-sensitive thermosetting polymers to produce custom parts. Also known as resin 3D printing, it produces extremely precise, high-resolution, finely detailed and smooth-surfaced parts that are ready for direct end-use, low-volume production or rapid prototyping. Create concept models, exterior prototypes, and complex parts with complex geometries in as little as 1 day.
SLA 3D printing is primarily used for:
- parts requiring high accuracy and features as small as 0.002 in.
- good surface quality for cosmetic prototypes
- form and fit testing
How Does SLA 3D Printing Works ?
The liquid tank is filled with liquid photosensitive resin, and the laser emits ultraviolet laser beams to irradiate to quickly solidify the thickness of the section layer. The laser beam focused by the lens scans the section profile to cure the resin to obtain a plastic sheet. The workbench lowers the height of one section layer thickness, and then solidifies another layer section, and the layers are superimposed to form a three-dimensional entity
Features of SLA 3D Printing
Rapid Protos’ stereolithography 3D printing service provides high standard, high resolution and smooth surface finish options for complex and detailed parts, and can also print larger size parts and products. The reason we choose this SLA printing is because of its Has the following characteristics:
- Excellent surface finish and post-processing options
- Tight tolerances and high detail accuracy
- Complex shapes with high precision
- Rapid prototyping can be completed in as little as 1 day
Top quality
High precision rapid prototyping up to ± 0.5%, down to ± 0.15 mm (± 0.006 in)
Rapid Manufacturing
The prototype can be completed in as little as 1 day.
Gallery of SLA 3D Printing Parts
SLA 1
SLA 2
SLA 3
SLA 4
Why Choose Our SLA 3D Printing Service
Our Capabilities for SLA
| Requirement | Desktop SLA | Industrial SLA |
|---|---|---|
| Maximum build size | 145 × 145 × 175 mm (5.7″ x 5.7″ x 6.8″) | 500 x 500 x 500 mm (19.68″ x 19.68″ x 19.68″) |
| Standard lead time | 4 business days | 4 business days |
| Dimensional accuracy | ± 0.5% with a lower limit of ± 0.15 mm (± 0.006″) | ± 0.2% with a lower limit of ± 0.127 mm (±0.005″) |
| Layer height | 50-100 um | 50-100 um |
Our SLA Manufacturing Standards
We manufacture your parts according to strict manufacturing standards. A verification of these requirements is included in our inspection report that is shipped with every order.
Available Materials for SLA
SLA (stereolithography) 3D printing is a type of additive manufacturing that uses a laser to cure liquid resin into solid parts. The resin that is used in SLA 3D printing typically contains a photosensitive polymer, which hardens when exposed to UV light.
There are many different types of resins that can be used for SLA 3D printing, each with their own unique properties. Some of the most common types of resins include:
| Material | Accuracy (mm) | Heat Deflection Temp (℃) | Shore Hardness | Flexural Strength (MPa) | Dielectric Constant |
|---|---|---|---|---|---|
| Standard Resin – White | ±0.1 | 46 | 79 | 67 | 3.3 – 4.2 |
| Tough Resin – Tea Green | ±0.1 | 58 – 65 | 76 – 85 | 60 – 75 | 3.3 – 4.2 |
| Standard Resin – Black | ±0.1 | 62 | 83 | 73 | 4.2 – 5.0 |
| High-Temperature Resin – Gray | ±0.1 | 100 | – | 69 – 76 | 4.2 – 5.0 |
| High-Temperature Resin – Beige | ±0.1 | 140 | – | 69 – 76 | 4.2 – 5.0 |
| Translucent Resin – Transparent Clear | ±0.1 | 49 | 87 | 69 – 76 | 4.0 |
| Fully Transparent Resin | ±0.3 | 49 | 87 | 69 – 76 | 4.0 |
When selecting a resin for SLA 3D printing, it is important to consider the properties of the resin and how they will affect the performance of the final part. In general, you want to select a resin that will provide the right balance of strength, flexibility, and temperature resistance for your application.
Surface Finishing Options For SLA 3D Printing
While additive manufacturing makes the shape you want, 3D printing leaves visible burrs and auxiliary supports. If you don’t want your custom parts to come out of the machine, choose a finish for them. At Rapid Protos we have many common finishes that help make things work better and look better.
| Image | Name | Description | Color | Detail |
|---|---|---|---|---|
 | Sanding and Polishing | This process involves sanding the surface of the 3D printed part with increasingly finer grits of sandpaper, followed by polishing with a polishing compound to achieve a smooth surface finish. | n/a | Learn more >> |
 | Painting | Painting the surface of the 3D printed part is a simple and effective way to improve its appearance and protect it from environmental factors. A range of paints and finishes can be used, including spray paints, airbrushing, and powder coating. | any colors you want | Learn more >> |
 | Chemical Treatments | Chemical treatments such as acetone vapor smoothing can be used to dissolve and smooth the surface of 3D printed parts made from ABS or similar materials. Other chemical treatments can be used to coat the surface of the parts with a protective layer or to alter their properties. | n/a | Learn more >> |
 | Electroplating | Electroplating can be used to coat the surface of 3D printed parts with a thin layer of metal, improving their durability, conductivity, and appearance. Common metals used for electroplating include gold, silver, and copper. | Aluminum, steel, stainless steel | n/a |
 | Heat Treatment | Heat treatment involves subjecting the 3D printed parts to high temperatures, which can help to improve their strength, hardness, and resistance to wear and tear. | n/a | Learn more >> |
 | Laser Etching | Laser etching can be used to create intricate designs and markings on the surface of 3D printed parts, which can be useful for labeling, branding, or creating custom textures. | n/a | Learn more >> |
FAQ
Our SLA 3D Printed Parts Application
Rapid Protos works with leading manufacturers from a variety of industries to support growing demand and streamline their supply chains. Our custom 3D printing services help more and more manufacturers turn their ideas into products
