Formlabs® PU Rigid 1000


PU Rigid 1000

Hybrid Chemistry Polyurethane Resin

PU Rigid 1000 SLA 3D printing material is formulated with a hybrid chemistry which allows it to be compatible with Formlabs SLA 3D printers. Parts produced with PU Rigid 1000 have exceptional impact strength and the physical properties of polyurethane, thus making it ideal for end-use applications that are intended to be exposed to harsh conditions. Also, this resin has been evaluated as a skin contacting device in accordance with ISO 10993-1.
Disclaimer | For commercial and research use only. Not for use in or around households or residences, or for recreation purposes, or outside of a commercial or research facility or institution.

Formulated to withstand extensive testing and perform under stress.

PU Rigid 1000 is not just another polyurethane material; it’s a superior semi-rigid and robust resin tailored for applications that demand resilience. Its exceptional ability to withstand repeated high impacts and thrive in harsh environments makes it a great choice for industries looking for durability and performance.
Not recommended for same-day prototyping.

speak to a 3D printing expert

Image of a 3D-printed end-use part made with Formlabs Rigid PU 1000 resin

Material Properties

Proto3000_Icons_Tensile Strength

35.0 ± 3.5 MPa

Proto3000_Icons_Tensile Modulus

0.92 ± 0.09 GPa

big wave icon

32.0 ± 1.6 MPa

Proto3000_Icons_Elongation at Break

80 ± 8%

Performance Scale

Modulus | Stiff to Pliable
Elongation | Low to High


hex Black Liquid

Why Select PU Rigid 1000 for Your Applications?


Rugged to Impact and Shock Absorbent

Sturdy, firm, unyielding PU Rigid 1000 3D-printed parts can protect vulnerable components even in severe impact conditions.

Notched IZOD

PU Rigid 1000 |  170 J/m

High-Quality Parts & Long-Lasting Polyurethanes

  • It supports complex geometries and balances strength, functionality, and design.
  • It absorbs very little moisture and is resistant to light, heat, and chemicals.

Image of PU-Rigid-1000-SLA-Material Cartridge from Formlabs, with a 3D-printed sample on top

Proto3000 icon to shows clean process or a safe skin contact devices

Unyielding Material and ISO 10993-1 Skin Contacting Device Certification

  • Maintains fixed shape and mechanical properties over time
  • The evaluation for the skin contact device was passed, following ISO 10993-1.


Proto3000 auto industry icon


Use PU Rigid 1000 Resin to produce stiff, high-performing polyurethane parts that can withstand demanding mechanical applications.

  • Protective casings, housings, and enclosures
  • Static jigs and fixtures undergoing high-stress
  • Sturdy consumer products

3d printing services

Image of vehicle seat buckles 3D printed with Formlabs PU Rigid 1000 resin

3D Printing Workflow

Screenshot of Formlabs' PreForm Software for generating 3D design files


Produce 3D File(s)

Using PreForm™ software, generate your print file with proper supports, orientation, and layout and then upload the file to your 3D printer.

Image shows a 3D printing technician preparing Formlabs SLA 3D printer with PU Rigid material


Prepare the 3D Printer

Fill the self-dispensing cartridge with PU resin carefully. Subsequently, properly insert the cartridge into the 3D printer, ensuring it’s within a dry cabinet. It’s important to load your Build Platform and Resin Tank accurately to initiate the 3D printing process.

Close-up of someone starting the Formlabs Form 3 printer


3D Print

Simply follow the clear prompts on the user-friendly touchscreen to confidently start your print.

Image of a curing chamber with PU RIgid - polyurethane parts in it



Place the Build Platform in a brief PGDA wash, then allow the parts to air dry or use an air compressor. Remove the parts from the platform and from the supports. When dry, set the parts in the humidity cure chamber for a minimum of a couple of days of post-curing.

Watch the Detailed 3D Printing Workflow for PU Rigid 650/1000

material safety datasheet icon Proto3000 additive manufacturing

Material Safety Datasheets

Access Database




Two minutes in PGDA (Propylene Glycol Diacetate)


To clean PU Rigid 650 Resin components, use Propylene Glycol Diacetate (PGDA). Ensure the parts are thoroughly air-dried. Consider using an air compressor or rinsing with N-butyl acetate to speed up the drying process.

form wash and form cure



Utilize a Humidity Cure Chamber for the period indicated for your material and part thickness, at least a few days.

form wash L and form cure L

Technical Specifications¹

Ultimate Tensile Sttrength
Ultimate Tensile Sttrength
35 ± 3.5 MPa
Young’s Modulus
Young’s Modulus
0.92 ± 0.09 GPa
Flexural Strength
Flexural Strength
32 ± 1.6 MPa
Flexural Modulus
Flexural Modulus
0.75 ± 0.03 GPa
Ross Flexing Fatigue (unnotched)
Ross Flexing Fatigue (unnotched)
> 50,000 cycles (PASS-no crack propagation)
Notched Izod
Notched Izod
170 J/m
Charpy Impact Test (Notched)
Charpy Impact Test (Notched)
23 kJ/m²
Tabor Abrasion
Tabor Abrasion
177 mm³
Physical Properties
Physical Properties
  • Hardnes, ShoreD 74
  • Density (solid) - 1.16 g/cm³
  • Viscosity @ 25 ºC: 1193 cP & Viscosity @ 35 ºC: 567 cP
Thermal Properties
Thermal Properties
  • Heat Deflection Temp. @ 1.8 MPa: 64 °C
  • Heat Deflection Temp. @ 0.45 MPa: 79 °C
  • Thermal Expansion: 142 μm/m/°C
  • Glass Transition Temperature (Tg1): -22 °C
  • Glass Transition Temperature (Tg2): 131 °C
Flammability Rating: HB; Smoke Density: (D s 1.5) = 31 (PASS) | (D s 4.0) = 244 (FAIL)
ISO Standards
ISO Standards
ISO 10993-5 Not cytotoxic
ISO 10993-10 Not an irritant
ISO 10993-10 Not a sensitizer

¹Material properties may vary based on part geometry, print orientation, print settings, temperature, and disinfection or sterilization methods used.
Data for post-cured samples were measured on Type I tensile bars printed on a Form 2 printer with 100 µm PU R1000 Resin settings, washed in a Form Wash for 2 minutes in ≥99% PGDA, and post-cured.
ISO 10993 standard testing samples were printed on a Form 3 with 100um PU Rigid 1000 Resin settings, washed in a Form Wash for 5 minutes in ≥99% PGDA, dried for at least 24 hours, and post-cured in an oven at 46°C and 70%RH for 3 days.