Flexible 50A Resin

From$199excl. sales tax

Flexible 50A Resin V2

Bulk Order Discount

15%
30 L
20%
60 L
25%
120 L
30%
240 L
35%
1,000 L
40%
2,000 L
45%
3,000 L

Contact Sales

1

Select Printer Series and Resin Volume

2

Accessories

  • $119

    Form 4 Resin Tank

    Low Force Display™ (LFD) 3D printing uses a flexible yet strong dual-layer film tank for consistent, high-quality prints. Every resin tank includes a reusable lid, making it easy to stack tanks and store resin outside of the machine. With a separate tank for each individual resin color or type, switching materials is as easy as sliding in a new tank.

    Resin Tanks are built to last and deliver consistent performance for at least 75,000 layers of printing — approximately 190 prints using average height model (39 mm tall), any resin, and 100 µm layer height.

    Form 4 Resin Tank

    Tech specs

    Compatible Printer
    Form 4, Form 4B
    Accessory type
    Resin Tank
    $119
  • $50

    Form 4 Mixer

    The Form 4 Resin Mixer improves material performance by keeping resin homogenous in the tank during the printing process. A Resin Mixer is required anytime you are printing. Resin Mixers typically last for the lifetime of your Resin Tank or more.

    For convenience, we recommend having one Resin Mixer for each Form 4 Resin Tank.

    Form 4 Mixer

    Tech specs

    Compatible Printer
    Form 4, Form 4B
    Accessory type
    Resin Tank
    $50
  • $299

    Form 4L Resin Tank

    Low Force Display™ (LFD) 3D printing uses a flexible yet strong dual-layer film tank for consistent, high-quality prints. Every resin tank includes a reusable lid, making it easy to stack tanks and store resin outside of the machine. With a separate tank for each individual resin color or type, switching materials is as easy as sliding in a new tank.

    Resin Tanks are built to last and deliver consistent performance for at least 75,000 layers of printing — approximately 190 prints using average height model (39 mm tall), any resin, and 100 µm layer height.

    Form 4L Resin Tank

    Tech specs

    Compatible Printer
    Form 4L, Form 4BL
    Accessory type
    Resin Tank
    $299
  • $99

    Form 4L Mixer

    The Form 4L Resin Mixer improves material performance by keeping resin homogenous in the tank during the printing process. A Resin Mixer is required anytime you are printing. Resin Mixers typically last for the lifetime of your Resin Tank or more.

    For convenience, we recommend having one Resin Mixer for each Form 4L Resin Tank.

    Form 4L Mixer

    Tech specs

    Compatible Printer
    Form 4L, Form 4BL
    Accessory type
    Resin Tank
    $99
  • $149

    Form 3 Resin Tank V2.1

    Low Force Stereolithography (LFS)™ 3D printing uses linear illumination and a flexible film tank to turn liquid resin into flawless parts. A key component of the LFS process, the strong dual-layer film at the bottom of the Form 3 Resin Tank, allows for a dynamic and precise print process.

    Notice: Form 3 Resin Tank V2.1 is compatible with all Formlabs resins, but is required for use with some specific materials. There are two previous versions of the Form 3 Resin Tank, Tank V1 and Tank V2, each with their own compatibility requirements. Read more about all tank versions, compatibility, lifetime, and maintenance in our support article.

    Form 3 Resin Tank V2.1

    Tech specs

    Compatible Printer
    Form 3, Form 3B
    Accessory type
    Resin Tank
    $149
  • $299

    Form 3L Resin Tank V3

    Low Force Stereolithography (LFS)™ 3D printing uses linear illumination and a flexible film tank to turn liquid resin into flawless parts. A key component of the LFS process, the strong dual-layer film at the bottom of the Form 3L Resin Tank allows for a dynamic and precise print process, scaled up for large format printing.

    Form 3L Resin Tank V3 offers an improved print success rate in some cases compared to the previous version of the Form 3L Resin Tank V2.

    Form 3L Resin Tank V3

    Tech specs

    Compatible Printer
    Form 3L, Form 3BL
    Accessory type
    Resin Tank
    $299

Why Choose Flexible 50A Resin?

Flexible 50A Resin is an elastomeric material with high elongation and high energy return. Parts are highly elastic, yet strong enough not to tear during printing.

 

Fast Springback

Bend, stretch, and compress parts that resume their normal shape afterwards.

Transparent

Create objects that are clear, providing visibility into the model.

Durable

Able to withstand rugged use for multiple cycles.

Pliable

Produce parts that look and feel like a molded silicone part.

Applications

Flexible 50A Resin is ideal for developing soft, flexible prototypes normally produced with silicone.

 

Wearables, such as straps

Compliant features for robotics

Compressible buttons

elastic 50a resin

Soft tissue anatomy and medical models

elastic 50a resin

Stretchable enclosures and casings

elastic 50a resin

Special effects props and models

Material Properties*

Download the Flexible 50A Resin Technical Data Sheet

Download the Flexible 50A Resin Safety Data Sheet

Parameter

Value

Ultimate Tensile Strength

3.4 MPa

Stress at 50% Elongation

0.9 MPa

Stress at 100% Elongation

1.7 MPa

Elongation

160%

Tear Strength

12.3 kN/m

Shore Hardness

55 A

* Material properties may vary based on part geometry, print orientation, print settings, and temperature. Data was obtained from parts printed using Form 3, 100 μm, Flexible 50A Resin settings, Flexible 50A Resin post-processing steps.

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Post-Processing

Washing

The foundational step in any SLA post-processing workflow is to remove any excess resin on the surface of the parts through an alcohol or ether wash.

 

SETTINGS

Form Wash | Form Wash L

Curing

Post-curing Engineering and Specialty Resins is essential for parts to achieve their full strength and functionality. This step completes the chemical reaction initiated during printing, transforming the part from its green state into a fully finished component.

 

SETTINGS

Form Cure V1 | Form Cure V2 | Form Cure L V1 | Form Cure L V2

 

FAQ

Flexible 50A Resin is a soft, translucent elastomeric material with a 50A Shore durometer, designed for prototyping parts that would traditionally be produced with softer rubbers and silicones. It features high elongation and high energy return, and parts are strong enough not to tear during printing.

Parts printed in Flexible 50A Resin can bend, stretch, and compress repeatedly without tearing, and they spring back quickly to their original shape. With an elongation at break of 160% and a tear strength of 12.3 kN/m, the material is built to withstand rugged, repeated use.

The material's measured properties include an ultimate tensile strength of 3.4 MPa, a stress at 100% elongation of 1.7 MPa, a Shore hardness of 55A, and a tear strength of 12.3 kN/m. Note that properties may vary based on part geometry, print orientation, print settings, and temperature. You can download the full Technical and Safety Data Sheets at the Formlabs Data Sheets page.

Because Flexible 50A Resin prints in a translucent color, finished parts allow visibility into the model. This can be useful for applications where monitoring internal features or fluid flow is important.

The resin is ideal for soft, flexible prototypes that mimic silicone or soft rubber. Common applications include wearables such as straps, compressible buttons, stretchable enclosures and casings, compliant features for robotics, soft tissue anatomy and medical models, and special effects props and models.

Flexible 50A Resin is compatible with Form 4, Form 4B, Form 4L, Form 4BL, Form 3, Form 3L, Form 3B, and Form 3BL. It works with corresponding resin tanks and build platforms for each printer series.

Post-processing involves two main steps. First, wash the part using isopropyl alcohol or an ether-based solution to remove uncured resin from the surface. Formlabs Form Wash or Form Wash L are both compatible. Second, post-cure the part using a Form Cure or Form Cure L unit. Post-curing is essential for parts to achieve their full strength and intended functional properties by completing the chemical reaction initiated during printing.

Wash time settings are available on the Formlabs support site for Form Wash and Form Wash L. Cure settings are available separately for Form Cure V1, Form Cure V2, Form Cure L V1, and Form Cure L V2.

Pricing varies by volume and printer series configuration, and bulk order discounts are available at increasing tiers. For current pricing details, visit the Flexible 50A Resin product page or contact the Formlabs sales team.

Yes. Formlabs offers a 3D printed sample part so you can see and feel the material quality firsthand before committing to a purchase.

Request a Free Sample Part

See and feel Formlabs quality firsthand. We’ll ship a free Flexible 50A Resin 3D printed sample part to your office.

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