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Using Flexible 80A Resin V2

Flexible 80A Resin V2 is a resilient 3D printing elastomer that rivals the look, feel, and function of 80A cast urethanes, TPUs, and hard rubbers.

Parts printed in Flexible 80A Resin V2 snap back into place and withstand repeated bending, tension, and compression. Create tear-resistant functional prototypes and end use parts, protect sensitive components with soft inserts and fixtures, or design refined padding and grips with tack-free surfaces and a matte, black finish.

Flexible 80A Resin V2 is a new material formulation that leverages the technology of Form 4 and Form 4L generation printers to deliver 2x higher tear strength, 2x higher elongation at break, 4x higher rebound, and improved aesthetics and aging compared to the previous version.

Recommended for:

Soft-touch, tactile prototypes
Seals and gaskets
Consumer products and wearables
Medical devices and anatomical models
Props and modelmaking
Parts that require quick rebound
Parts that require fatigue resistance and long-term performance through numerous stress cycles

Not suitable for:

Simulating very high elongation materials
Very fine features or thin walls

Notice:

Flexible 80A Resin V2 has not been tested for skin safety in accordance with ISO 10993. Users must perform their own testing or use Flexible 80A Resin V2 for long-term skin contact applications a) at their own risk, or b) with a medical-grade coating.
Applying UV-safe coatings to Flexible 80A Resin V2 may reduce its elongation properties.

Note:

To learn more about the performance or specific material properties of Flexible 80A Resin V2, please refer to the Safety Data Sheet (SDS) and Technical Data Sheet (TDS). Always consult the SDS as the primary source of information to understand safety and handling of Formlabs materials.

	Formlabs Flexible 80A Resin V2 FLFL8002, post-cured	Formlabs Formlabs Flexible 80A Resin FLFL8001, post-cured	Formlabs Elastic 50A Resin, post-cured
Elongation at break (%)	230	120	160
Tensile Strength (MPa)	10	8.9	3.2
Durometer/Shore hardness	83A	80A	50A
Tear strength (kN/m)	28	24	19.1
Pendulum rebound (%)	56	13
Ross flex at 90°, notched (23 ℃)	2808	556

To learn more about the performance properties of each Formlabs resin, refer to the library of material properties datasheets.

Printing with Flexible 80A Resin V2

Notice:

There may occasionally be some crystalized or gelled resin blocking the bite valve. If resin does not dispense normally, squeeze the bite valve with a gloved hand to remove the blockage.

Flexible 80A Resin V2 is a high-viscosity resin. It may take longer to fill the resin tank than other resins.

Print feature recommendations

Supported wall thickness
Minimum: 400 microns
Recommended: 600 microns

Unsupported wall thickness
Minimum: 600 microns
Recommended: 800 microns

Shallow angles
Minimum: 19 degrees
Recommended: 45 degrees

Horizontal span/bridge
Maximum: 600 microns

Vertical wire diameter
Minimum: 300 microns
Maximum: 1500 microns

Clearance between adjacent parts
Minimum: 1000 microns

Hole diameter
Minimum: 800 microns

Tip:

When designing your model, keep in mind that its flexibility will depend on its structure and thickness. A thicker part will be more impact resistant but less bendable.

Install or update PreForm, then set up the next print job.

To prepare a model for printing in PreForm:

Washing

All SLA 3D printed parts require washing to remove residual resin. Formlabs SLA printers come with a Finish Kit that you can use to manually wash your printed parts. Formlabs also offer automated part washing solutions, including the Form Wash and Form Wash L, that agitate the solvent bath and remove parts from the bath after a set time.

Wash parts according to the support article Form Wash/Form Wash L time settings. Pay particular attention to information that affects mechanical properties or biocompatibility requirements.

Note:

Flexible 80A Resin V2 is incompatible with Formlabs Resin Washing Solution.

Post-curing requirements

Flexible 80A Resin V2 requires post-curing to reach its optimal mechanical properties: one cycle while submerged in water in a UV-transparent container, then a second cycle in air once the parts have dried. Refer to the time and temperature settings for your machine for post-curing recommendations:

Form Cure V1
Form Cure V2
Form Cure L V1
Form Cure L V2