Engineering, Manufacturing, and Product Design

Our library of versatile, reliable Engineering Resins is formulated to help you reduce costs, iterate faster, and bring better experiences to market.

Choose Engineering Resins For:

Advanced Functionality

Resistance to Stress

Stability Over Time


Solve Complex Engineering Challenges With a Range of Functional Materials

Whether you’re optimizing your manufacturing process, rapidly iterating through designs, or assessing form and fit, our Engineering Resins are formulated to withstand extensive testing and perform under stress.

Grey Pro Resin

Grey Pro Resin for Versatile Prototyping

Grey Pro Resin offers high precision, moderate elongation, and low creep. This material is great for concept modeling and functional prototyping, especially for parts that will be handled repeatedly.

Grey Pro Resin is ideal for:
  • Form and fit testing
  • Injection molded product prototypes
  • Mold masters for plastics, silicones, and more
  • Jigs and fixtures for manufacturing

Technical Data

An all-purpose functional prototyping material, Grey Pro has good elongation, high heat resistance, and low creep.

Grey Pro ResinRigid ResinStandard Resin
Flexural Modulus (GPa)2.0 GPa3.7 GPa2.2 GPa
Tensile Modulus (GPa)2.6 GPa4.1 GPa2.8 GPa
Elongation (%)13.0%5.6%6.2%


Rigid Resin

Rigid Resin for Stiffness and Precision

Rigid Resin is reinforced with glass to offer very high stiffness and a polished finish. This material is highly resistant to deformation over time and is great for printing thin walls and features.

Rigid Resin is ideal for:
  • Turbines and fan blades
  • Jigs, fixtures, and tooling
  • Manifolds
  • Electrical casings and automotive housings

Technical Data

Rigid Resin has the highest modulus of all Formlabs materials. It has great heat resistance and stability, but is more brittle and less impact resistant than Tough Resin and Durable Resin.

Grey Pro ResinRigid ResinStandard Resin
Flexural Modulus (GPa)2.0 GPa3.7 GPa2.2 GPa
Tensile Modulus (GPa)2.6 GPa4.1 GPa2.8 GPa
Elongation (%)13.0%5.6%6.2%


Durable Resin

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Compatible with Form 3, Form 2.

Durable Resin for Low Friction and Wear

With low modulus, high elongation, and high impact strength, Durable Resin produces parts with a smooth, glossy finish and high resistance to deformation. Use this material for applications requiring minimal friction.

Durable Resin is ideal for:
  • Consumer packaging
  • Bushings and bearings
  • Snap fits and flexures
  • Living hinges

Technical Data

Durable has the highest impact strength of our Engineering Resins. Its low modulus and high elongation make it highly resistant to deformation.


Tough Resin

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Compatible with Form 3, Form 2.

Tough Resin for Rugged Prototyping

Tough Resin balances strength and compliance, making it the ideal choice for prototyping strong, functional parts and assemblies that will undergo brief periods of stress or strain.

Tough Resin is ideal for:
  • Sturdy prototypes
  • Interference and press fits
  • Assemblies

Technical Data

Tough Resin’s high impact strength and compliance make it perfect for parts that need to return to their original shape after force is applied over a brief period.


Elastic Resin

Elastic Resin for Soft Flexible Parts

Our softest Engineering Resin, this 50A Shore durometer material is suitable for prototyping parts normally produced with silicone. Choose Elastic Resin for parts that will bend, stretch, compress, and hold up to repeated cycles without tearing.

  1. View Print Preparation Guide
Elastic Resin is ideal for:
  • Wearables and consumer goods prototyping
  • Medical models and devices
  • Compliant features for robotics
  • Special effects props and models

Technical Data

Elastic Resin is the softest of our Engineering Resins, with a Shore durometer of 50A as well as high elongation and energy return. With high tear strength, this material can withstand repeated cycles.


Flexible Resin

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Compatible with Form 3, Form 2.

Flexible Resin for Hard Flexible Parts

An 80A Shore durometer material for more rigid flexible parts with a matte-black soft-touch finish. Choose Flexible Resin to create ergonomic features as part of larger assemblies.

Flexible Resin is ideal for:
  • Cushioning and damping
  • Wearables and consumer goods prototyping
  • Handles, grips, and overmolds

Technical Data

Flexible Resin has a Shore durometer of 80A, close to that of rubbers used to produce shoe soles or tire treads. This material has low tensile modulus and high elongation.


High Temp Resin

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Compatible with Form 3, Form 2.

High Temp Resin for High Thermal Stability

High Temp Resin offers a heat deflection temperature (HDT) of 238 °C @ 0.45 MPa, the highest among Formlabs resins. Use it to print detailed, precise prototypes with high temperature resistance.

High Temp Resin is ideal for:
  • Hot air, gas, and fluid flow
  • Heat resistant mounts, housings, and fixtures
  • Molds and inserts

Technical Data

High Temp Resin offers a heat deflection temperature (HDT) of 238 °C @ 0.45 MPa, the highest among Formlabs resins. Materials with higher HDT typically map to lower elongation.

MaterialHeat Deflection Time @ 0.45 MPa (post-cured)¹Elongation at Break (post-cured)²
High Temp238°C2.3%
Grey Pro77.5°C13%

¹ Heat Deflection Temperature data obtained using the ASTM D 648-16 method.

² Elongation at Break data obtained using the ASTM D 638-14 method.


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Compare Properties Across Materials

Formlabs Engineering Resins are designed to simulate a wide range of end-use materials. Compare mechanical properties to find the resins that best match your product requirements.

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Data Sheets

Download safety and technical data sheets for all Formlabs materials.

  • Handling & Safety

    Handling & Safety

    Resin should be handled with care. Proper handling will ensure safe printing and efficient use. Our resins have been designed to be similar or safer to handle as other household chemicals or adhesives. Formlabs materials do not contain volatile solvents so special ventilation is not required. Skin contact should be avoided.

    The Safety Data Sheets (SDS) are up to date for every resin product and follow the latest government guidelines. Always consult the SDS as the primary source of information to understand safety and handling of Formlabs materials. For more information about handling resin, learn more tips for resin maintenance in our Help Center.

  • Technical Data

    Technical Data

    Plastics are complex materials, and finding the right one for your specific application requires balancing multiple attributes. Our library of resins is ideal for product development, rapid prototyping, and a variety of specialized applications. Download our Technical Data Sheets to explore the mechanical properties of each material.

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Technical Data Sheets

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    Safety Data Sheets

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