SLA – Tough 1000 Resin

Tough 1000 Resin is a 3D printing material designed for Stereolithography (SLA) technology. It is a ductile, impact-resistant SLA material. Tough 1000 Resin is an advanced engineering SLA material designed to replicate the performance of high-density polyethylene (HDPE). It combines high ductility, impact resistance, and fatigue durability, making it ideal for functional prototypes and end-use parts that experience repeated stress, flexing, or wear. With exceptional elongation at break, long-term fatigue resistance, and smooth low-friction surfaces, Tough 1000 Resin is engineered for parts that must bend, compress, or perform reliably over time without cracking.

Key Material Facts:

• Designed for manufacturing durable, flexible parts that can bend, compress, and recover without cracking, similar to HDPE plastics.
• Tough 1000 Resin offers high ductility and impact resistance, making it ideal for functional parts subjected to repeated stress and long-term use.
• Excellent fatigue resistance (>100,000 cycles) allows parts like hinges and compliant mechanisms to perform reliably over time.
• Smooth, low-friction surface finish makes it well-suited for moving assemblies such as joints, clips, and wear components.
• High elongation at break (~180%) enables parts to flex significantly without failure, unlike more rigid SLA materials.
• Parts can be printed solid and air / fluid tight right off the printer, no sealing required.
• Strong, durable parts ideal for real-world applications including functional testing, jigs & fixtures, and end-use components.
• Compatible with assembly features including:
  • Glue Joints / light welding
  • Printed In Threads (However Helicoils are recommended)

Common Applications:

• Impact-resistant jigs and fixtures designed for repeated use on the production floor
• Living hinges and compliant mechanisms requiring repeated flexing without failure
• Snap-fit enclosures, clips, and assemblies that benefit from ductility and toughness
• Low-friction components such as joints, linkages, and moving assemblies

Material Reference Data:

• For more information on how the SLA printing process works please check out this page.
• For SLA part design trick and tips check out this page.
• Material manufacturers website

---

SLA – Tough 1000 Resin: Technical specifications

Mechanical Properties – Post-cured for 12 minutes at 70 °C

Property Description	Measurement (Metric)	Measurement (English)
Ultimate Tensile Strength (MPa | PSI)	26.3 MPa	3810 psi
Tensile Modulus (MPa | KSI)	932 MPa	135 ksi
Elongation at Break	180%	180%
Flexural Strength (MPa | PSI)	29.0 MPa	4210 psi
Flexural Modulus (MPa | KSI)	761 MPa	110 ksi
Notched Izod (J/m | ft-lbf/in)	72 J/m	1.3 ft-lb/in
Unnotched Izod (J/m | ft-lbf/in)	No Break	No Break
Heat Deflection Temperature	55.3 °C @ 0.45 MPa (65 PSI) 44.6 °C @ 1.8 MPa (261 PSI)	131.5 °F @ 0.45 MPa (65 PSI) 112.3 °F @ 1.8 MPa (261 PSI)
Thermal Expansion (0-150°C)	168.2 µm/m/°C	93.4 µin/in/°F
Dielectric Strength	15.1 kV/mm	–
Dielectric Constant (50 Hz)	0.014	–
Dielectric Constant (1 kHz)	0.013	–
Dissipation Factor (50 Hz)	3.70	–
Dissipation Factor (1 kHz)	3.59	–
Volume Resistivity	4 × 1015 Ω·cm	–
Shore D Hardness	68D	–

Download the full material data sheet here

SLA – Tough 1000 Resin Solvent Compatibility

Percent weight gain over 24 hours for a printed and post-cured 1 x 1 x 1 cm cube immersed in respective solvent

Solvent	24 hr weight gain, %
Acetic Acid 5%	0.2
Acetone	30.4
Bleach ~5% NaOCl	0.0
Butyl Acetate	38.9
Diesel Fuel	0.7
Diethyl glycol Monomethyl Ether	6.9
Hydraulic Oil	0.1
Hydrogen peroxide (3%)	0.2
Isooctane (aka gasoline)	39.8
Isopropyl Alcohol	6.9
Mineral oil (Light)	0.0
Mineral oil (Heavy)	0.1
Salt Water (3.5% NaCl)	0.2
Skydrol 5	5.0
Sodium Hydroxide solution (0.025% PH=10)	0.2
Strong Acid (HCl conc)	7.3
Water	0.0
Xylene	62.7
TPM	7.0

---

SLA – Tough 1000 Resin: Part Gallery