3D Printing with Transparent Resin

#Nov 08, 2023

    Clear resin 3D printing allows the creation of transparent, durable and aesthetically appealing parts. It has proven its value from prototyping to production in numerous applications, including automotive, medical and consumer goods, and is particularly well-suited for additive manufacturing applications requiring transparent components, optical elements or high-quality surface coatings.

    The demand for transparent resin 3D printed parts has led to the development of a variety of materials, techniques and equipment specifically designed for this purpose. However, achieving the desired level of transparency and surface quality requires careful consideration of exactly which transparent resin and which 3D printer to use.

    What is transparent resin 3D printing?

    Transparent resin 3D printing is a specialized process that uses transparent photopolymers to create three-dimensional objects with a high degree of clarity and translucency. This process typically uses Stereolithography (SLA) or Digital Light Processing (DLP) 3D printing technologies, which use a light source to selectively cure liquid resin layer by layer.

    Advantages of Transparent Resin

    Fine Details

    It is suitable for printing all types of geometries with complex details that would be challenging with traditional production methods.


    They often exhibit good mechanical strength and durability, making them suitable for functional parts.

    Optical Properties

    They offer excellent optical properties, making them suitable for applications where light transmission and clarity are critical.

    What parts can be printed using 3D printing with clear resin?


    Clear resin is widely used today for prototyping. It is an option that allows designers and engineers to visualize complex geometries and internal structures without requiring assembly. This application is useful in the automotive, aerospace, and consumer electronics industries where transparent components are often required for functional and aesthetic purposes.


    They often exhibit good mechanical strength and durability, making them suitable for functional parts.

    Optical Components

    Transparent resin 3D printing is also well suited for the production of optical components such as lenses, light guides and prisms. The high level of clarity and sensitivity offered by transparent resins makes them ideal for applications that require stringent optical performance, such as lighting and imaging systems.

    Medical Devices

    Biocompatible transparent resins can be used to produce accurate models for surgical planning in the medical field, as well as to produce personalized medical devices such as orthodontic aligners and surgical guides. The transparency of clear resin allows easy visualization of internal structures, making it invaluable for medical applications.

    Architectural Models

    Architects and designers often use clear resin 3D printing to create detailed, transparent models of buildings and structures. These models provide valuable information to project stakeholders by helping visualize the aesthetic and structural elements of the design.

    Art and Sculpture

    Artists and designers can take advantage of the aesthetic qualities and fine details that can be achieved with clear resin 3D printing to create intricate works of art and sculptures. This material allows for the creation of unique, visually stunning works that showcase the creativity and skill of the artist.

    Jewelry and Fashion

    Clear resin is also used in the jewelry and fashion industry, allowing designers to create intricate and visually striking pieces with a high level of detail. From designer jewelry to avant-garde fashion accessories, clear resin 3D printing opens up a world of creative possibilities.

    Liquid Transport Systems

    Transparent resin due to its chemical resistance; can create components for liquid handling systems such as valves, fittings and containers. These parts can withstand harsh chemicals and corrosive substances, making them suitable for a variety of industrial applications.

    How to 3D print with transparent resin?

    Correct Resin

    Choosing the appropriate clear resin material for your project is crucial to achieving the desired results. Various types of clear resins are available, each with unique properties, advantages, and disadvantages; such as transparency, mechanical properties, chemical resistance and intended application.

    Correct Printer

    SLA and DLP printers are the most commonly used technologies for transparent resin 3D printing as they offer high resolution and precise control over the curing process. When choosing a 3D printer, it’s important to consider factors such as build volume, resolution, print speed, and compatibility with your chosen clear resin.

    Curing Process

    Son kürleme, şeffaf reçine 3D baskı sürecinde önemli bir adımdır. Parça basıldıktan sonra, reçinenin tamamen kürlenmesini sağlamak için UV ışığına maruz bırakılmalıdır, bu da sağlam ve stabil bir nesne elde edilmesini sağlar. Bu adım aynı zamanda yazdırılan parçanın mekanik özelliklerinin ve şeffaflığının geliştirilmesine de yardımcı olur.

    Post Process

    Post-processing is critical to achieve the desired level of transparency and surface quality in clear resin 3D printed parts. Various post-processing techniques can help you improve the clarity and appearance of your printed objects:

    – Sanding and Polishing: To achieve a smooth and clear surface, sand the printed piece using progressively finer sandpaper, starting with a coarse grit (e.g. 400) and working your way up to a fine grit (e.g. 2000 or higher). After sanding, use polishing compounds and a polishing cloth or polishing wheel to increase the surface finish and transparency of the part.
    – Resin Dipping: Resin dipping involves dipping the sanded and polished part into a clear, low viscosity resin or a special coating solution. This process helps fill in any remaining surface imperfections and improves the overall clarity of the part. Make sure the part is thoroughly cleaned and dry before dipping and follow the manufacturer’s instructions for curing the dipped part.
    – Nitrogen Curing: Nitrogen curing is a technique that involves placing the clear resin piece in a chamber filled with nitrogen gas during the post-curing process. This method can help achieve higher transparency by reducing the amount of oxygen available. However, nitrogen curing may only be suitable for some transparent resins and requires special equipment.
    – Spray Coating: Spray coating involves applying a clear, UV-resistant lacquer or coating to the surface of the sanded and polished part. This process can improve the transparency and surface finish of the part while providing additional protection against UV degradation.

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