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What 3D Printing Material is Flexible?

In the world of 3D printing, there are a variety of materials available that can be used to create a wide range of objects. One increasingly popular type of material is flexible filament, which provides a range of distinct benefits for certain types of projects. Flexible 3D printing material is made from polymer-based materials that have been formulated to be malleable and resistant to breakage, allowing users to create objects with intricate designs and unique textures. In this article, we will explore some of the most popular types of flexible 3D printing materials and the benefits that they offer.

Understanding the Basics of 3D Printing

3D printing is a cutting-edge technology that has revolutionized many industries, from aerospace to medical. It involves creating three-dimensional objects from a digital file by adding layers of material until the object is complete. However, not all 3D printing materials are the same, and not all can produce flexible objects.

The Importance of Flexibility in 3D Printing

Flexibility is a crucial characteristic of 3D printed objects, especially for industries that require bendable, durable, and resilient products. For instance, the automotive industry utilizes flexible 3D printing materials to create shock-absorbing components, while the fashion industry uses them to produce wearable and comfortable clothing. Therefore, it is essential to understand the different types of flexible 3D printing materials available.

A key takeaway from this text is the importance of flexibility in 3D printing, especially in industries that require bendable, durable, and resilient products. To create flexible objects, it is necessary to use specialized materials like Thermoplastic Polyurethane (TPU), Thermoplastic Elastomer (TPE), or Ninjaflex. When choosing these materials, factors such as strength, temperature resistance, and printability must be considered to ensure the optimal performance of the printed object.

Thermoplastic Polyurethane (TPU)

TPU is a popular flexible 3D printing material that is commonly used in creating phone cases, watch straps, and other wearable accessories. It has a high level of flexibility, elasticity, and durability, making it perfect for products that require bending and twisting.

Thermoplastic Elastomer (TPE)

TPE is another type of flexible 3D printing material with excellent elasticity and flexibility. It is commonly used in the production of toys, tools, and automotive parts. TPE is also resistant to UV light, chemicals, and abrasion, making it ideal for outdoor applications.


Ninjaflex is a brand of flexible 3D printing filament that is made from thermoplastic elastomer. It has the highest level of flexibility among all flexible 3D printing materials and can produce objects with a soft and rubber-like feel. Ninjaflex is used in creating prosthetics, phone cases, and other objects that require a high level of flexibility.

Factors to Consider When Choosing Flexible 3D Printing Materials

When choosing 3D printing materials, several factors come into play. These include:


Flexibility and strength are inversely proportional in 3D printing materials. Therefore, it is essential to choose a material that strikes a balance between flexibility and strength to avoid producing objects that are too brittle or too soft.

Temperature Resistance

Some flexible 3D printing materials are not suitable for high-temperature applications. Therefore, it is crucial to consider the temperature resistance of the material before using it in applications that require high-temperature resistance.


The printability of a flexible 3D printing material determines how easy it is to print, the speed of printing, and the quality of the printed object. Some materials may require specialized printers and settings, while others may be compatible with standard 3D printers.

FAQs for the topic: what 3d printing material is flexible

What are the flexible materials used in 3D printing?

There are many flexible materials available for 3D printing, such as thermoplastic elastomers (TPEs), thermoplastic polyurethanes (TPUs), and flexible nylons. Each material has its unique properties and advantages depending on the application.

Which type of TPE is best for flexible 3D printing?

There are different types of TPEs available in the market, and each one has its unique properties. Some of the popular TPEs used for 3D printing are SainSmart TPU, NinjaFlex, and Cheetah. These TPEs have good flexibility, strength and are easy to print.

What are the benefits of using flexible materials in 3D printing?

Using flexible materials in 3D printing provides the ability to create complex shapes, geometries, and designs that other materials cannot achieve. It also provides more comfort and safety, making it ideal for many wearable and medical applications. Moreover, flexible materials are great for prototyping since they can be easily tested, refined and adjusted before final production.

What are the limitations of flexible materials in 3D printing?

Unlike other materials, some of the flexible materials are challenging to print, requiring specific settings and conditions to ensure a consistent and reliable print. They may also require a specialized extruder and flexible build plate, which may increase the cost of printing. Additionally, some flexible materials may have less heat resistance and may not be suitable for high-temperature applications.

Can you print flexible parts on any 3D printer?

Not all 3D printers are designed to print flexible materials. Flexible materials require specific settings and conditions to ensure a successful print, such as precise control over temperature and flow rate. Therefore, it is essential to have a 3D printer that can handle the unique properties of flexible materials. Some of the 3D printers that can print flexible materials include Prusa i3 MK3/MK3S, FlashForge Creator Pro, and the Ultimaker 2+ Extended.

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