Formlabs Rigid 4000 Resin, 5 L

Taking your Additive Manufacturing capability to the next industrial level requires materials that can withstand the demands of real production. The Formlabs Rigid 4000 Resin 5L container is designed specifically for high-volume printing workflows, offering a cost-effective solution for creating rigid engineering parts. This glass-filled photopolymer provides exceptional mechanical properties that closely mimic the rigidity of high-performance thermoplastics such as PEEK and PEKK. Whether you are prototyping load-bearing components or manufacturing final tooling, this material delivers a polished finish and millimetre-precise accuracy. Please note that this 5L format requires a Resin Pump to function correctly within your Formlabs ecosystem.

Why choose Formlabs Rigid 4000 Resin?

Unrivalled tensile strength

Within Formlabs' extensive engineering materials library, this resin stands out for having the highest tensile strength. By reinforcing the polymer matrix with glass, the material achieves a level of rigidity essential for parts subjected to significant stress. It is the go-to choice for engineers who need to bridge the gap between prototyping and final production performance.

Dimensional stability and resistance

One of the key advantages of Formlabs Rigid 4000 Resin, 5L is its ability to maintain dimensional stability under load. Unlike softer materials that can yield or deform over time (creep), this resin stoically resists deformation caused by forces, pressures, and torsion. This makes it a reliable material for functional assemblies where maintaining the original form is critical.

Designed for demanding environments

Industrial applications often involve exposure to harsh environments. This material has been developed to offer high thermal and chemical resistance, allowing printed parts to withstand elevated temperatures and contact with various industrial chemicals without degrading. This durability extends the use cases well beyond simple visual models.

Millimetre precision and professional aesthetics

Despite its industrial strength, the resin does not compromise on surface quality. It produces strong, detailed moulds and models with a smooth matte finish that looks and feels like a final injection-moulded product. This polished aesthetic makes it suitable for both client-facing presentation models and functional end-use parts.

Real-world applications and use cases

Versatile engineering solutions

The unique properties of Formlabs Rigid 4000 Resin make it an indispensable tool for producing rigid prototypes and robust functional parts. It is particularly effective for creating brackets and anchors that must bear weight without bending. Its high rigidity also enables the printing of thin-walled parts that maintain their structural integrity, as well as precise jigs and fixtures for manufacturing floors. It effectively simulates the rigidity of PEEK, offering a versatile alternative for specialised engineering tasks.

Workflow and post-processing

Washing parts

To ensure the highest-quality surface finish, the fundamental step in the Stereolithography (SLA) workflow is to thoroughly clean the print. Any excess resin remaining on the surface must be removed by washing with isopropyl alcohol (IPA) or ether, preparing the part for the final post-curing stage.

Post-curing for maximum strength

For engineering and specialised resins, post-curing is not optional — it is essential. This process completes the polymerisation reaction that began during the printing phase. By exposing the "green part" to specific light and heat, the material achieves its full mechanical properties and functionality, transforming into a durable, ready-to-use component.

Formlabs Rigid 4000 Resin — Technical Specifications

• Material type: Glass-filled for very high rigidity and a polished finish.
• Resistance to deformation: Highly resistant to deformation over time.
• Ideal for: Printing thin walls and fine details.
• Limitations: Not suitable for parts that need to bend or flex.
• Ultimate tensile strength: 69 MPa
• Tensile modulus: 4.1 GPa
• Elongation: 5.3%
• Flexural modulus: 3.4 GPa
• Notched Izod impact: 23 J/m
• Heat deflection temperature @ 0.45 MPa: 77 °C
• Thermal expansion (0–150 °C): 63 μm/m/°C
• Layer thickness compatibility (microns):
  • Form 3/3B/3+/3B+: 50, 100
  • Form 3L/3BL: 50, 100
  • Form 4/4B: 50, 100
  • Form 4L/4BL: 50, 100
• Printer compatibility: Form 3/3+, Form 3B/3B+, Form 3L/3BL, Form 4/4B, Form 4L/4BL
• Resin Tank compatibility: Form 3 Tank V2/V2.1, Form 3L Tank (all), Form 4 Tank, Form 4L Tank

Buy Formlabs Rigid 4000 Resin (5L) at EXPERT3D

By choosing to purchase from the EXPERT3D online store, you are trusting a team of experts with extensive experience in the Additive Manufacturing market since 2012. We do not simply sell equipment and consumables; we offer comprehensive guidance to help you select the right materials for your engineering challenges. Our team provides qualified support before, during, and after your purchase to ensure your production never stops.

As official Formlabs representatives in Spain, EXPERT3D guarantees excellent value for money, along with the official warranty and certified technical service. When you purchase your Formlabs Rigid 4000 Resin with us, you can be confident of receiving genuine products, with express delivery and direct manufacturer backing.