Rapid Prototyping Guide: Methods, Materials, and Process Selection
A breakdown of FDM, SLA, SLS, MJF, and CNC machining for prototype development: when to use each, how to match process and material to your validation goal.
Read the ArticleTough 2000 3D Printing Material
Stereolithography (SLA) · Engineering Resins
ABS-like resin with high elongation and stiffness for functional prototypes.
What Is Tough 2000?
Tough 2000 is the stiffest and strongest resin in the Formlabs Tough series, delivering ABS-like properties - 42 MPa tensile, 1,500 MPa flex modulus, and 79% elongation. It bridges the gap between rigid SLA resins and flexible ones, making it the default for functional prototypes that must survive real-world handling.
Formlabs Tough 2000 Resin V2, printed with Stereolithography (SLA). Every order is reviewed by our engineering team - no minimum order quantity.
When to choose Tough 2000
Choose Tough 2000 when your SLA prototype must survive real-world handling - drops, vibration, assembly and disassembly, and user testing. It is the toughest resin in the Formlabs lineup, combining 42 MPa tensile with 79% elongation for ABS-like performance at SLA precision.
If your part is a visual-only prototype or a fit check that will not be abused, Grey V5 is stronger (62 MPa) and stiffer (2,750 MPa) at a lower cost. Tough 2000 costs more and is softer - the trade-off is toughness. Choose it only when the part will actually see mechanical stress.
For parts that need more flexibility - living hinges, squeeze-fit mechanisms - step down to Tough 1500 (PP-like) or Tough 1000 (HDPE-like). For production-grade ABS-like parts, FDM ABS is tougher under impact and has much better heat resistance (87 °C vs 54 °C). Tough 2000 excels specifically where SLA precision matters and the part must also survive handling.
Material Properties
Representative values - process- and orientation-dependent. Full technical datasheet available on request.
Process
Stereolithography (SLA)
Tensile strength
42 MPa
Elongation at break
79%
Flexural strength
60 MPa
Flexural modulus
1,500 MPa
Heat deflection (HDT)
54 °C @ 0.45 MPa
Density
1.15 g/cm³
Max build size
200 × 125 × 210 mm (Form 4)
Min wall thickness
0.5 mm
Resolution / layer
50–100 µm
Relative cost
$$$ (1 = lowest, 4 = highest)
Design Guidelines
Plan features to print reliably and assemble cleanly in Tough 2000. Need DFM help?
Min wall
0.5 mm - 0.8 mm+ for drop testing
Min feature
0.3 mm - at 50 µm layer height
Clearance
0.3–0.4 mm - for mating parts
Max size
200 × 125 × 210 mm - Form 4 build volume
Dimensional tolerances
Typical tolerance on the Form 4 is ±0.1 mm or ±0.15%. Tough 2000 holds geometry well on parts up to 150 mm. Thin walls under 0.5 mm may flex during wash and cure steps. For functional assemblies, design interference fits 0.1 mm tighter than rigid SLA to account for the material's compliance.
Printing notes
Tough 2000 prints on the Form 4 at 50–100 µm layer height. Wash in IPA for 15–20 minutes after printing. Post-cure at 60 °C for 60 minutes under 405 nm UV light. Cure time is critical - under-cured parts are too flexible and do not reach spec stiffness; over-cured parts become stiffer but lose the elongation that makes Tough 2000 valuable. Supports orient away from impact faces and functional surfaces where witness marks could create stress concentrators.
How Tough 2000 Compares
Tough 2000 alongside related materials.
| Tough 2000 | Tough 1500 | Grey V5 | ABS | |
|---|---|---|---|---|
| Tensile strength | 42 MPa | 33 MPa | 62 MPa | 33 ± 3 MPa |
| Heat deflection (HDT) | 54 °C @ 0.45 MPa | 52 °C @ 0.45 MPa | 71 °C @ 0.45 MPa | 87 °C @ 0.45 MPa |
| Flexural modulus | 1,500 MPa | 1,400 MPa | 2,750 MPa | ≈ 2,200 MPa |
| Elongation | 79% | 30–40% | 13% | 10–15% |
| Density | 1.15 g/cm³ | 1.15 g/cm³ | 1.18 g/cm³ | 1.05 g/cm³ |
| Relative cost | $$$ | $$$ | $$ | $$ |
When to Use Tough 2000
Where Tough 2000 fits, where it doesn't, and what to use instead.
Functional prototype housings
42 MPa tensile and 79% elongation let printed housings survive repeated drop tests, assembly cycles, and user handling that crack rigid SLA resins like Grey V5.
EngineeringMechanical assemblies and multi-part fits
SLA precision (±0.1 mm) combined with ABS-like toughness means interference fits, press-fit pins, and threaded inserts hold up through prototype evaluation.
EngineeringConsumer product user-testing samples
Printed prototypes feel and behave like injection-molded ABS during focus groups and user testing - stiff enough to be structural, tough enough to survive daily handling.
Consumer ProductsAutomotive interior concept parts
1,500 MPa flex modulus and 79% elongation replicate the touch-and-feel of ABS instrument panel components, allowing design reviews on printed samples rather than soft-tooled parts.
AutomotiveRobotics mounting plates and brackets
Tough 2000 absorbs vibration and impact at motor mounts and sensor brackets without cracking - where rigid SLA parts fracture after a single drop.
RoboticsStrengths
- Best combination of stiffness and elongation in the SLA catalog - 42 MPa tensile at 79% elongation bridges the gap between rigid and flexible resins
- Survives repeated drop tests and assembly cycles that crack Grey V5 and Accura 25 on first impact
- SLA precision (±0.1 mm, 50 µm layers) with ABS-like mechanical behavior - validates functional prototypes at resolution FDM cannot match
Keep in mind
- 54 °C HDT - modest heat resistance; parts soften under dashboard sun or near electronics heat sources; use FDM ABS (87 °C) for thermal environments
- Less stiff than Grey V5 (1,500 MPa vs 2,750 MPa) - deflects more under sustained load; choose Grey V5 when dimensional rigidity under load matters
- $$$ cost tier - more expensive than Grey V5 ($$); specify Tough 2000 only when toughness is a real requirement, not as a default
Finishes & Colors
Finishing options and in-stock colors for Tough 2000.
Standard
Washed, post-cured; translucent green surface.
Best for: Functional prototypes
Sanded + Painted
Support marks removed, painted to specification.
Best for: User-testing samples
In-Stock Colors
Translucent Green
Custom colors and dyeing available on request. Contact us for options.
Tough 2000 FAQ
Grey V5 is stronger and stiffer (62 MPa, 2,750 MPa) but brittle under impact at 13% elongation. Tough 2000 is less rigid (42 MPa, 1,500 MPa) but absorbs impact with 79% elongation. Choose Grey V5 for dimensional precision and stiffness; Tough 2000 for parts that must survive drops and handling.
FDM ABS has better heat resistance (87 °C vs 54 °C HDT) and is more cost-effective for simple geometries. Tough 2000 offers 3x tighter tolerances (±0.1 mm vs ±0.3 mm) and much smoother surfaces. Tough 2000 also has higher elongation (79% vs 10–15%). Choose based on whether precision or heat resistance matters more.
Tough 2000 is one of the best materials for consumer product prototyping - it feels and behaves like injection-molded ABS during user testing. Parts survive normal handling, assembly, and moderate drops. For focus groups and ergonomic evaluation, it produces more realistic samples than FDM.
Tough 2000 tolerates repeated assembly and disassembly well. Snap-fits, press-fit pins, and threaded inserts hold up through dozens of assembly cycles. For parts that must be assembled hundreds of times, FDM ABS or MJF PA12 are more durable long-term.
Tough 2000 is a prototyping material at the $$$ tier. It excels at validating ABS-like behavior at SLA resolution. For production volumes, injection-molded ABS or MJF PA12 is more cost-effective with better long-term durability.
The Form 4 holds ±0.1 mm on Tough 2000 parts. The material is compliant, so interference fits should be designed 0.1 mm tighter than for rigid SLA resins. Specify functional mating surfaces at quoting.
Tough 2000 has a 54 °C HDT - not suitable for heat-exposed applications. For tough parts that must also handle heat, FDM ABS (87 °C) or SLS PA12 (154 °C) are better choices. Tough 2000 is designed for room-temperature functional prototyping.
Tough 2000 is stiffer and stronger (42 MPa, 1,500 MPa modulus, 79% elongation) - ABS-like behavior. Tough 1500 is softer and more flexible (33 MPa, 1,400 MPa modulus, 30–40% elongation) - PP-like behavior. Choose 2000 for functional housings and drop-test prototypes. Choose 1500 for snap-fit validation and living-hinge testing.
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