Formlabs Formlabs Rigid 10K Resin (1L) for Form 4


Formlabs Rigid 10K Resin is an ultra-stiff, highly durable material ideal for industrial applications requiring precision and resistance to heat and chemicals. It provides a smooth, matte finish with excellent dimensional stability, perfect for molds, jigs, and tooling. Compatible with various Formlabs printers, it offers superior performance for professional-grade projects.

  • Ultra-stiff, heat and chemical resistant
  • Maintains accuracy under stress
  • Ideal for high-stress industrial tooling
  • Cartridge compatible with Form 4 3D printers
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Rigid 10K Resin


Elevate your industrial projects with Formlabs Rigid 10K Resin, a highly glass-filled, ultra-stiff material designed for precision and durability. It has a smooth, matte finish and exceptional resistance to heat and chemicals making it perfect for molds, jigs, and high-stress tooling. Ideal for achieving dimensional accuracy and stability in high-temperature processes, this resin is the go-to for professionals needing strong, stable, and detailed components.

Key Features of the Formlabs Rigid 10K V1.1 Resin:

  • Simulates glass and fiber-filled thermoplastics' stiffness
  • Superior heat resistance and excellent chemical resistance
  • Maintains dimensional accuracy under pressure and heat
  • Faster, easier printing compared to milling metals
  • Smooth, matte, polished finish
  • Ideal for jigs, dies, short-run injection mold masters, and other tooling

Heat Resistant
88 MPa
Ultimate Tensile Strength
11 GPa
Tensile Modulus
158 MPa
Flexural Strength
Form 4 / 4B
Form 3L / 3BL
Form 3+ / 3B+
Form 3 / 3B
Form 2
Resin Tank(s) [RT]
Form 4 / 4B RT
Form 3L / 3BL RT V2
Form 3L / 3BL RT V1
Form 3 / 3B RT V2.1
Form 2 LT Tank
Build Platform(s) [BP]
Form 4 BP Flex
Form 4 BP
Form 3L BP 2L
Form 3L BP
Form 3 Stainless Steel BP
Form 3 BP 2
Form 3 BP

*The resin is compatible with these 3D printers. Please ensure you're selecting the correct cartridge compatibility at purchase as the Form 4 uses a different cartridge system from previous models. The listing you are currently on is for the Form 4.

For the Form 3 series / Form 2 compatible cartridges, click here.

What are the Material Properties* of the Formlabs Rigid 10K Resin?

Ultimate Tensile Strength 88 MPa
Tensile Modulus 11 GPa
Elongation 0.017
Flexural Modulus 9.9 GPa
Notched Izod 20 J/m
Heat Deflection Temp. @ 0.45 MPa 238°C
Thermal Expansion, 0 - 150 °C 41 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.

Download the Formlabs Rigid 10K Resin Technical Data Sheet
Download the Formlabs Rigid 10K Resin Safety Data Sheet

Formlabs Form Wash (Gen 2) Formlabs Form Cure
Duration Duration
10 min + 10 min in IPA 60 min
Notes Notes
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.
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.

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