Formlabs Durable Resin (Form 4) 1 L EOL

Formlabs Durable Resin (Form 4) 1 L

Durable Resin v2.1 is a pliable, impact-resistant, and lubricious material designed for squeezable parts and low-friction assemblies. Parts printed in this material are robust and have similar strength and stiffness to polyethylene (PE), with a coefficient of friction comparable to Delrin® (POM). It is the ideal choice for functional prototypes that require a smooth surface finish and high resistance to wear.

This 1-litre cartridge is optimised for the Form 4 ecosystem, providing a reliable solution for engineering and product design. Note: Durable Resin for Form 4 will be available until May 2026, after which Formlabs recommends switching to Tough 1000 resin V1 for 5x higher fracture toughness and improved resistance.

Why choose Durable Resin?

Durable Resin offers a unique combination of flexibility and low friction, making it suitable for parts that must interact or move without sticking.

• Polyethylene simulation: mimics the mechanical properties of PE, providing a balance of pliability and strength.
• Low friction: features a lubricious surface finish comparable to Delrin®, ideal for moving parts and assemblies.
• High impact resistance: absorbs shock and resists shattering, making it suitable for jigs and fixtures undergoing significant impacts.
• Durable and pliable: produces parts that can be squeezed or bent repeatedly while maintaining their original shape.

Applications for Durable Resin v2.1:

Durable Resin is ideal for functional testing of consumer products and industrial components.

• Squeezable prototypes: bottles, containers, and packaging models requiring a soft-touch, pliable feel.
• Low-friction assemblies: bushings, bearings, sliders, and hinges that require smooth movement.
• Jigs and fixtures: manufacturing aids that must withstand impact or repeated handling on the factory floor.
• Functional models: consumer goods requiring the toughness and surface quality of polypropylene or polyethylene.

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.

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.

Note: Only compatible with the Formlabs Form 4 series resin printer.