Backed by industry leaders:

What is SLA 3D Printing?

Stereolithography (SLA) is an advanced additive manufacturing technology that uses a UV laser to cure liquid resin into a solid structure layer by layer. It is known for producing high-resolution, smooth-surface parts, making it ideal for prototyping, medical models, and intricate functional components. SLA is widely used in industries such as automotive, healthcare, jewelry, and consumer goods.

SLA Materials

PP-like

A resin that mimics the properties of polypropylene, offering excellent impact resistance, flexibility, and fatigue resistance. This material is ideal for producing snap-fit parts, enclosures, and lightweight functional prototypes.

ABS-like

A high-strength resin designed to replicate the mechanical properties of traditional ABS plastic. It provides good impact resistance, durability, and dimensional stability, making it an excellent choice for functional prototypes, casings, and engineering components. Its toughness allows for post-processing such as sanding, drilling, and painting, making it ideal for end-use applications requiring structural integrity.

Clear

A high-clarity resin engineered for applications that require transparency, such as optical prototypes, fluid flow analysis models, and aesthetic parts. The material features excellent surface quality and can be post-processed to enhance transparency, reducing the natural haze typical of SLA-printed parts. It is frequently used in lighting components, lenses, and medical models.

TPU-like

A flexible resin that replicates the elasticity and softness of thermoplastic polyurethane. It provides high elongation at break, excellent tear resistance, and good durability, making it suitable for gaskets, seals, flexible hinges, and ergonomic components. Its ability to withstand repeated compression and stretching makes it an excellent choice for parts requiring resilience and flexibility over time.

High Temp

A thermally resistant resin designed to maintain structural integrity at elevated temperatures. With excellent heat deflection properties, this material is ideal for tooling, molds, and industrial applications requiring resistance to thermal deformation. It is often used in functional prototypes for automotive, aerospace, and electronics industries where exposure to high heat is a concern.

Rubber-like

A soft, flexible resin that replicates the properties of rubber, offering superior elasticity, shock absorption, and excellent surface grip. This material is ideal for applications such as overmolded components, vibration-damping parts, gaskets, and wearable prototypes. It allows for high-precision detailing while maintaining flexibility and resilience under mechanical stress.

Ceramic

A high-rigidity resin with ceramic-like hardness, thermal resistance, and a smooth surface finish. This material provides excellent wear resistance, low thermal expansion, and dimensional stability under high temperatures. It is commonly used in tooling, medical applications, and specialized industrial components where heat resistance and hardness are critical.

ESD-safe resin

An electrostatic discharge-resistant material designed for applications requiring static protection. It prevents the buildup of electrostatic charges, making it ideal for electronic housings, circuit board fixtures, and components used in sensitive environments. This material maintains good mechanical strength while ensuring safe handling of electronic devices in manufacturing and testing setups.

SLA Material Properties Compared

Material

Colour

Max. dimensions

Tensile Stress at break (MPa)

Tensile Modulus (GPa)

ABS like

white, black, matte dark grey

1350x500 mm

30-68

1.2-3.38

PP like

grey

1350x745x500 mm

38-44

1.79-1.98

Clear

translucent/transparent (painting)

300x300x500 mm

45-60

1.70-2.75

High Temp

light grey, light blue

300x300x500 mm

50-80

2.40-3.05

Rubber like

white, black

160x160x180 mm

-

-

TPU-like

translucent, white, black

300x300x500 mm

-

-

ESD safe resin

light grey


44

1.937

SLA Surface Finishes

Painting

Involves applying protective coatings or decorative finishes to printed objects using specialized techniques to improve aesthetics and durability.

SLA capabilities compared with other technologies

Capabilities

Max. Dimensions

Min. Feature Size

Min. wall thickness

Tolerance

Description

SLS

680x380x540 mm

0.8mm

0.7-1.3 mm 

±0.3% (±0.3mm)

Uses a laser to fuse powdered materials layer by layer, ideal for creating durable and complex parts without support structures,  widely employed in aerospace, automotive, and medical industries.

DMLS

500x280x340 mm

0.6-0.8 mm

0.22 mm

±0.25 (≤15mm);
±0.5 (>15mm)

Similar to selective laser sintering but uses metal powders, producing high-strength, intricate metal parts suitable for functional prototypes and end-use components in aerospace, medical, and automotive industries.

SLA

1350x750x500 mm

0.2-0.5 mm

1-3 mm

±0.2% (min. 0.2 mm)

Employs a UV laser to cure liquid resin into solid layers, ideal for creating highly detailed, smooth, and intricate parts. Widely used for detailed prototypes and intricate designs in jewelry and dental applications.

MJF

380x284x380 mm

0.5 mm

0.3-0.5 mm

±0.3% (±0.2 mm)

Utilizes multiple jets to apply fusing agents onto powder, which is then fused by heating elements. Delivers high-resolution, functional parts with fast production times, often used in aerospace, automotive, and consumer goods industries.

Polyjet

490x380x200 mm

1.2-2 mm

1 mm

±0.1%

Jetting liquid photopolymer resin and curing it layer by layer with UV light, enabling highly detailed, multi-material parts with diverse properties. Popular in prototyping and complex, color-rich models in medical modeling, consumer goods and electronics fields.

FDM

914x690x914 mm

1.2-1.5 mm

1.5 mm

±0.5% (±0.5 mm)

Uses a heated nozzle to extrude thermoplastic filament layer by layer, ideal for creating durable and functional prototypes. Commonly used in manufacturing, automotive, and consumer products.

DLP

510x280x350 mm

0.5 mm

1 mm

±0.30 mm < 100mm;
±0.3% > 100 mm

Uses a digital light projector to cure liquid resin layer by layer, providing fast and precise prints with high resolution. Commonly used in dental, jewelry, and high-detail prototype applications.

Large Scale

2500x2500x4000 mm

3 mm

-

±5 mm/mtl

Uses a digital light projector to cure liquid resin layer by layer, providing fast and precise prints with high resolution. Commonly used in dental, jewelry, and high-detail prototype applications.

DED

1200x800x600 mm

-

-

-

Uses an electron beam to melt and deposit metal powders or wire, ideal for repairing or adding features to metal parts in aerospace and manufacturing.

Bindet Jet

430x310x150 mm

-

-

±3% mm

Involves depositing a binder material onto a powder bed to form parts, which are then sintered. Useful for producing complex, cost-effective parts, often used automotive, aerospace, and consumer goods industries as well as jewerky.

Pros & Cons of SLA 3D Printing

Pros

Extremely high-resolution and accuracy

Smooth surface finish (comparable to injection moulded parts)

Ability to print transparent components

Ideal for complex geometries and intricate designs

Cons

Post-processing required (support removal, washing, curing)

Generally lower structural strength compared to SLS, MJF, or FDM

Durability: photopolymers degrade over time

Limited UV resistance

Low production volume

Non-recyclable (thermosetting polymers)

FAQ about our SLA 3D Printing service

What are the mechanical properties of SLA 3D printed parts?

SLA parts typically have high detail accuracy and smooth surfaces but are generally more brittle than SLS or FDM parts. They are best suited for visual models, prototyping, and low-load functional applications.

What are the dimensional tolerances of SLA parts?

SLA parts achieve high precision, with typical tolerances of ±0.2% (minimum ±0.2 mm). However, part size, geometry, and resin type may influence accuracy.

What are the design constraints for SLA?

SLA offers significant design freedom, but there are still some constraints to consider:
- Minimum Wall Thickness: 0.5 mm recommended for structural integrity, but it is possible to print details around 0.1-0.2 mm thanks to the high resolution.
- Supports: Required for overhangs and complex geometries to print the parts which needs to be removed after printing.
- Post-Processing: SLA parts require cleaning and curing with UV light for optimal strength.

How does it compare to other technologies?

SLA offers superior finish and detail, but lower mechanical strength. Ideal for realistic prototypes and visual models.

Get started and turn your ideas into reality

All uploads are secure and confidential