Stereolithography (SLA) 3D Printing Service
High-Performing Prototypes and Serialized Production Parts
High-Resolution, Accurate Parts without Tooling
Stereolithography (SLA) is a high-precision and high-resolution 3D printing technology that uses lasers to print out parts layer by layer through a light-cured liquid resin. SLA printed parts have smooth surfaces, precise details, and dimensional accuracy of up to 0.1 mm, which can be directly used in small batch production of end products, and are also widely used in rapid prototyping and verification. Compared with FDM,SLA has no interlayer lines and higher printing accuracy. FINDTOP offers a variety of SLA materials with adjustable parameter Settings, such as standard, titanium, temperature resistance, biocompatible, and more.
Stereolithography Materials
| Material Name | Description | Flexural Strength (MPa/KSI) | Elongation at Break (%) | [email protected] MPa (°C) | Data Sheets |
| Accura 25 | White, PP-like | 58 MPa/KSI | 20% | 63 °C | Accura 25 Data Sheet |
| Accura ClearVue | Clear/Translucent, PC-like | 67 MPa/KSI | 7% | 46 °C | Accura ClearVue Data Sheet |
| Somos WaterShed XC 11122 | Clear/Translucent, ABS-like | 69 MPa/KSI | 15% | 50 °C | Somos Watershed XC 11122 Data Sheet |
| Somos EvoLVe 128 | White, ABS-like | 70 MPa/KSI | 11% | 52 °C | Somos EvoLVe 128 Data Sheet |
| Accura Xtreme Grey | Grey, ABS-like | 71 MPa/KSI | 22% | 62 °C | Accura Xtreme Grey Data Sheet |
| Somos NeXt | White, PP-like | 71 MPa/KSI | 10% | 57 °C | Somos NeXt Data Sheet |
| Somos ProtoGen 18420 | White, ABS-like | 71 MPa/KSI | 16% | 47 °C | Somos ProtoGen 18420 Data Sheet |
| Somos Taurus | Dark Gray, ABS-like | 74 MPa/KSI | 24% | 62 °C | Somos Taurus Data Sheet |
| Accura ABS Black (SL 7820) | Black (painted), ABS-like | 78 MPa/KSI | 13% | 51 °C | Accura ABS SL 7820 Data Sheet |
| Accura Xtreme White 200 | White, ABS-like | 79 MPa/KSI | 20% | 47 °C | Accura Xtreme White 200 Data Sheet |
| Somos WaterClear Ultra 10122 | Clear/Translucent, PC-like | 84 MPa/KSI | 7% | 47 °C | Somos WaterClear Ultra 10122 Data Sheet |
| Accura 60 | Clear/Translucent, PC-like | 101 MPa/KSI | 13% | 55 °C | Accura 60 Data Sheet |
| Somos ProtoTherm 12120* | Translucent Red, PC-like | 109 MPa/KSI | 4% | 126 °C | Somos ProtoTherm 12120 Data Sheet |
| Accura 48HTR* | Translucent Amber, PC-like | 118 MPa/KSI | 7% | 130 °C | Accura 48HTR Data Sheet |
| Somos PerFORM* | White, Ceramic-filled | 146 MPa/KSI | 1% | 268 °C | Somos PerFORM Data Sheet |
| Accura Bluestone* | Blue, Ceramic-filled | 154 MPa/KSI | 2% | 284 °C | Accura Bluestone Data Sheet |
Available Finishes for SLA Printed Parts
- Matte: Support surface light grinding + sandblasting to achieve uniform matte.
- Natural: Support surface light grinding, improve quality.
- Strip steel: there may be small dot defects after removing the support.
- Fast polishing: Only the support surface is polished, and some layers are visible.
- Customization: Provide a variety of post-treatment options such as polishing, painting, heat treatment, etc.
Applications of Stereolithography (SLA) 3D Printing
- Conceptual model: printing speed is fast, precision is high, and design concepts can be iterated quickly.
- Rapid prototype: functional prototype, the material can simulate different materials.
- Digital manufacturing: high precision and good repeatability, mass production of discrete or customized parts.
- SLA can quickly print conceptual design prototypes, but also small batch digital production of terminal parts, a wide range of applications
Benefits of SLA 3D Printing
SLA is the 3D printing technology of choice for printing precision smooth models, offering standard and high-resolution print quality options with build sizes up to 29 inches for large parts. SLA accurately reproduces complex shapes and details and is often used for final design validation before injection mold production. FINDTOP offers a wide selection of Accura and Somos materials, as well as excellent surface treatment and post-treatment solutions.
SLA General Tolerances
| Description | Standard Resolution | High Resolution |
|---|---|---|
| Build envelope | 29” x 25” x 21” | 10” x 10” x 10” |
| Layer height | 0.004" | 0.002" |
| Tolerance, XY Plane | +/- 0.005” for the first inch is typical, plus +/- 0.002” for every inch thereafter. | +/- 0.005” for the first inch is typical, plus +/- 0.002” for every inch thereafter. |
| Tolerance, Z Plane | +/- 0.010” for the first inch is typical, plus +/- 0.002” for every inch thereafter. | +/- 0.010” for the first inch is typical, plus +/- 0.002” for every inch thereafter. |
| Minimum linear feature size | Under 0.030” are at risk and under 0.020” will not build. | Under 0.020” are at risk and under 0.010” will not build. |
| Minimum radial feature size | 0.035" | 0.030" |
Overview: What is Stereolithography (SLA) 3D printing?
Stereolithography is an additive manufacturing technique that uses ultraviolet light to irradiate and selectively cure photosensitive liquid resins to build parts by precisely curing them layer by layer. Support structures need to be set up before printing and manually removed after printing. The printed parts need to be cleaned in a solvent solution to remove the uncured resin and then post-cured in a UV oven. Stereolithography enables high-precision 3D printing by precisely curing the resin layer by layer with ultraviolet light.
