Stereolithography

Stereolithography (SLA) is a resin-based 3D printing technology that creates parts by curing liquid photopolymer resin layer by layer. It is known for its high accuracy, fine detailing and smooth surface finish.

SLA is used for both highly detailed display models and industrial applications. With the right engineering resin, it can produce functional prototypes, precision components, moulds, jigs and parts for testing and validation.

Why Choose SLA?

  • Excellent dimensional accuracy
  • Smooth, professional surface finish
  • Captures very small features and intricate details
  • Suitable for thin walls and complex shapes
  • Ideal for presentation-ready prototypes
  • Wide range of standard and engineering resins
  • Parts can be sanded, primed, painted or polished

Industrial Applications of SLA

SLA is commonly used for:

  • High-detail engineering prototypes
  • Product design and fit-check models
  • Small housings, covers and enclosures
  • Jigs, fixtures and assembly aids
  • Master patterns for moulding and casting
  • Fluid-flow and transparent test models
  • Medical, dental and anatomical models
  • Jewellery patterns and precision components
  • Low-volume specialised parts

Available Resin Properties

The performance of an SLA part depends heavily on the resin selected. Different materials can be used depending on the application:

  • Standard resin: For detailed models and general prototypes
  • Tough or durable resin: For functional parts requiring improved impact resistance
  • Clear resin: For transparent, translucent and fluid-visualisation models

When Should You Choose SLA?

Choose SLA when your project requires:

  • Fine details or very small features
  • A smooth surface with minimal visible layer lines
  • Accurate prototypes for checking form and fit
  • Presentation-quality models
  • A specialised engineering resin
  • Master patterns for moulding or casting

SLA vs FDM

Choose SLA for better detail, accuracy and surface finish. It is particularly useful for small precision parts and professional-looking prototypes.

Choose FDM for larger, more economical parts and functional components where visible layer lines are acceptable.

SLA vs SLS

Choose SLA when accuracy, fine detailing and surface quality are the main priorities.

Choose SLS when you need durable functional components, greater design freedom without support structures, or parts with more consistent mechanical strength.

Important to Know

Standard SLA resin can be brittle and may not be suitable for heavy impacts, repeated loading or outdoor use. For industrial applications, the correct engineering resin must be selected based on the required strength, flexibility, temperature resistance and working conditions.

At Tote3D, we provide SLA printing for detailed models, industrial prototypes and specialised applications. We also offer post-processing services including sanding, priming, painting and clear-part finishing.

Share your 3D model and application requirements with us, and we will help you select the most suitable resin and printing process.

Request a Quote
Applications
Post Processing

Discover the incredible possibilities of SLA 3D printing with Tote3D. Here’s how our SLA technology can be used:

  • Decorative Figurines and Statues
    Our SLA prints are perfect for adding a touch of elegance to your space.
    These intricately designed figurines and statues are ideal for home decor
    or collectibles.
  • Miniature Models
    Whether for tabletop gaming, architectural designs, or artistic displays,
    our SLA prints bring every small detail to life.
  • Prototypes
    Need a visually stunning prototype? SLA is perfect for producing highly
    detailed, professional-looking models for product design and validation.
  • Jewelry Prototyping
    Create precise, detailed designs for jewelry molds or concepts, showcasing
    creativity and craftsmanship.
  • Gift Items
    Personalized statues or intricate designs make memorable gifts for special
    occasions.
  • Fine Art and Sculptures
    Our SLA prints are ideal for reproducing complex sculptures or fine art
    pieces with unmatched detail.
  • Educational Models
    Perfect for creating scientific models or historical replicas to enhance
    learning experiences in schools or museums.
  • Scale Models
    Create precise replicas for exhibitions, architectural designs, or hobby
    projects with smooth finishes and excellent detail.
  • Character and Prop Models
    Bring your favorite characters or props to life with our high-resolution
    SLA prints, perfect for collectors or displays.
  • Design Validation
    Ideal for businesses or individuals looking to test detailed concepts
    before moving to full-scale production.

Here’s how Tote3D ensures every SLA print looks its absolute best before it reaches you:

  • Support Removal
    After printing, any supporting structures are carefully removed to
    preserve the intricate details of the model.
  • Cleaning
    The printed item is washed in a cleaning solution, such as isopropyl
    alcohol (IPA), to remove any uncured resin, ensuring a clean and smooth
    surface.
  • Curing
    The model is hardened under UV light to enhance durability and provide a
    stable finish, making it ready for handling and use.
  • Sanding
    For models requiring a perfect finish, we use fine-grit sandpaper to
    smooth out any imperfections or layer lines.
  • Priming
    A primer coat is applied to prepare the surface for painting, ensuring an
    even application of colors and enhancing overall aesthetics.
  • Painting
    Our painting process adds life and vibrancy to your SLA prints, turning
    them into stunning pieces of art. (Painting services are available for
    select items.)
  • Sealing
    For painted models, a clear protective coating is applied to maintain the
    color quality and give a glossy or matte finish, as per the design.
  • Assembly
    If your product includes multiple parts, we ensure secure assembly,
    maintaining structural integrity and functionality.
  • Polishing
    The final touch! Polished models are cleaned and buffed to achieve a
    flawless appearance, ready for display or use.
  • Quality Check
    Every SLA print undergoes a thorough inspection to ensure it meets
    Tote3D’s high-quality standards before it’s shipped to your doorstep.

SLA 3D Printing FAQ

What is SLA printing, and how is it different from FDM?

SLA (Stereolithography) uses liquid resin cured by a laser to create objects with smooth surfaces and high detail. Unlike FDM, SLA produces finer, more intricate designs.

Are SLA prints fragile?

Yes, SLA prints are more delicate than FDM prints. They are suitable for decorative or light-use items but should be handled with care.

What are the typical applications of SLA printing?

SLA is ideal for figurines, statues, artistic models, jewelry prototypes, and highly detailed decorative items.

How should I store SLA printed products?

Store SLA prints in a cool, dry place away from sunlight to prevent discoloration or weakening of the resin.

How do SLA prints look?

SLA prints have a smooth surface and fine details, making them visually stunning and ideal for display purposes.

How do I clean SLA products?

Use a soft, damp cloth to clean SLA prints. Avoid harsh chemicals, as they may damage the resin.

Are SLA products painted?

Yes, we offer painted SLA products to enhance their visual appeal. Our painting process ensures a professional, high-quality finish.

Do you ship SLA products safely?

Absolutely! SLA products are fragile, so we use honeycomb sheets for secure cushioning. This eco-friendly material protects your items during transit. 

What kind of packaging do you use for SLA prints?

Our SLA products are carefully wrapped in honeycomb sheets, ensuring they are well-protected while being environmentally conscious.

How should I handle SLA prints after purchase?

Handle SLA prints gently, as they are more delicate than FDM prints. Ensure they are stored securely and avoid rough handling.

How long do SLA prints last?

With proper care and storage, SLA prints can maintain their quality for years. Keep them out of direct sunlight and handle them gently.

Can SLA prints be repaired if damaged?

Minor cracks or chips can often be repaired using resin adhesive or touch-up paint.