Rigid 10K Resin 1 L


Lead time: 14 days

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

This highly glass-filled resin is the stiffest material in our engineering portfolio. Choose Rigid 10K Resin for precise industrial parts that need to withstand significant load without bending. Rigid 10K Resin exhibits a smooth matte finish and is highly resistant to heat and chemicals.

The “10K” in the name represents the material’s tensile modulus. If you need a less stiff material, try Rigid 4000 Resin.

Supports print resolutions: 100 and 50 microns.
Post-curing required.
Requires Resin Tank LT for Form 2.
Requires Resin Tank V2 for Form 3.

  • Rigid 10K Resin 1 L
High quality industrial prototype in Rigid 10K Resin

Why Choose Rigid 10K Resin?

Rigid 10K Resin is a high performance material that is strong, completely stiff, and stable.

Extremely Stiff

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.

Incredible Surface Quality

Exhibits a smooth matte finish.


Rigid 10K Resin is ideal for creating rigid, strong, industrial-grade prototypes. Rigid 10K Resin can be faster and easier to print compared to milling aluminum and steel.

Consider Rigid 10K Resin for:

Short-run injection mold masters and inserts
Aerodynamic test models
Heat resistant and fluid exposed components, jigs, and fixtures
Simulates stiffness of glass and fiber-filled thermoplastics

Material Properties*

Rigid 10K Resin

Ultimate Tensile Strength

65 MPa

Tensile Modulus

10 GPa



Flexural Modulus

9 GPa

Notched Izod

16 J/m

Heat Deflection Temp. @ 0.45 MPa

163 °C

Thermal Expansion, 0-150 °C

47 μm/m/°C

Data was obtained from parts printed Form 3, 100 µm and post-cured with a Form Cure for 60 minutes at 70°C.


Form Wash Settings


10 minutes + 10 minutes​ in IPA


Rigid 10K Resin contains glass particles, which strengthens printed parts. Maintain separate wash buckets to prevent glass particles adhering to parts printed with other resins. Parts with two wash times require two wash cycles. For the second wash cycle, use clean solvent. The first wash cycle removes the bulk of the resin, while the second cycle fully cleans the parts.

Form Cure Settings


60 min



70 °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 10K Resin V1. Optionally, after post-curing, heat the printed part in a non-food oven at 90 °C for 125 minutes for a higher heat deflection temperature.