Custom duct produced in Rigid 4000 Resin

Why Choose Rigid 4000 Resin?

Rigid 4000 Resin is a glass-filled material that has the highest tensile strength in our Engineering Resin Library.


Resistant to deformation under a variety of forces, pressures, and torques.

High Thermal and Chemical Resistance

Withstands high temperatures and a variety of chemicals.


Produce strong, detailed, and accurate molds or models.

Smooth, Matte Finish

Deliver parts that look and feel like a finished product.


Produce stiff and strong engineering-grade prototypes that can be load-bearing.

Consider Rigid 4000 Resin for:

Mounts and brackets
Thin-walled parts
Jigs and fixtures
Simulates stiffness of PEEK

Material Properties*

Rigid 4000 Resin

Ultimate Tensile Strength

69 MPa

Tensile Modulus

4.1 GPa



Flexural Modulus

3.4 GPa

Notched Izod

23 J/m

Heat Deflection Temp. @ 0.45 MPa

77 °C

Thermal Expansion (0-150 °C)

63 μm/m/°C

* Material properties can vary with part geometry, print orientation, print settings, and temperature. Data was obtained from parts printed using Form 3, 100 μm, Rigid settings and post-cured with a Form Cure for 15 minutes at 80 °C.


Form Wash Settings


15 minutes​ in IPA


Rigid 4000 Resin contains glass particles, which strengthens printed parts. Maintain separate wash buckets to prevent glass particles adhering to parts printed with other resins.

Form Cure Settings


15 min



80 °C


For parts printed in an engineering-focused resin (such as those in the Rigid, Tough & Durable, and Flexible & Elastic families), post-curing ensures that the parts reach their optimal mechanical properties and can function as designed. There is only one recommended post-curing time for Rigid 4000 Resin V1.