Resin | ADDForm

What Is Resin?

Technology:
Formlabs Form 4L

Dimensional accuracy:
Parts produced on the Formlabs Form 4L typically achieve accuracy in the range of ~25–100 microns, with very tight tolerances and excellent repeatability when using calibrated resins and optimized print settings.
For best-in-class accuracy, Formlabs generally specifies:±0.15% of part dimensions, with a lower limit around 0.1 mm, depending on resin and geometry
Highest accuracy achieved with engineering resins and proper post-curing

Build Volume Space:
353 × 196 × 350 mm (13.9 × 7.7 × 13.8 in), providing a 24.2 L print area for large parts or multiple components in a single job

Resins for SLA Printing on the Formlabs Form 4L

‍On the Formlabs Form 4L, SLA printing uses advanced photopolymer resins to produce parts with exceptional detail, accuracy, and surface finish. Liquid resin is precisely cured using UV light through Formlabs’ Low Force Display™ (LFD) technology, building parts layer by layer with outstanding consistency and reliability.Formlabs offers a wide range of resins for the Form 4L, each designed for specific performance requirements, including high strength, flexibility, impact resistance, heat stability, and biocompatibility. The choice of resin directly affects a part’s mechanical properties, appearance, and functional performance, making material selection a key factor in achieving production-ready results.With the right resin, the Form 4L enables everything from high-detail prototypes and visual models to functional parts, tooling, and low-volume production.

Formlabs Form 4L Resin Materials & Descriptions

Grey Resin V5 — General-purpose standard resin with balanced strength, precision, and surface finish ideal for prototypes and visual models.
‍Black Resin V5 — Versatile material with a sleek matte finish, great for functional prototypes, cases, and housings.
‍White Resin V5 — Opaque, rigid standard resin with strong detail and surface quality for presentation parts.
‍Clear Resin V5 — Transparent resin for parts requiring clarity or internal feature visibility, such as light pipes and fluidics.
‍Color Resin V5 — Pre-mixed colour resin option for visually rich prototypes without painting.
Color Base Resin — Base resin formulated to mix with pigments for custom coloured prints.
Clear Cast Resin — Optimized for lost-wax casting with low ash and stable casting behavior.
‍Castable Wax Resin — High-detail wax-based material for jewelry and precision castings with clean burnout.
Durable Resin V2.1 — Flexible and impact-resistant material with low friction, suitable for assemblies and wearables.
‍Elastic 50A Resin V2 — Soft, rubber-like elastomer for flexible prototypes and gaskets.
‍Flexible 80A Resin V1.1 — Offers softer yet robust flexibility for parts that need bending, compression, or resilience.
ESD Resin V1 — Electrostatic dissipative material for electronics handling fixtures and static-safe tooling.
Fast Model Resin V1 — High-speed resin for rapid prototype printing with balanced accuracy and workflow efficiency.
High Temp Resin V2 — Very high heat resistance for functional parts and tooling exposed to elevated temperatures.
Rigid 10K Resin V1.1 — Extremely stiff, glass-filled material for precision industrial parts and tooling.
‍Rigid 4000 Resin V1 — High stiffness and mechanical strength for demanding engineering applications.
‍Tough 1500 Resin V2 — Tough, durable resin with good strength and flexibility for functional prototypes and wearables.
‍Tough 2000 Resin V2 — Strong, ductile material suited for robust functional parts that resist impact and wear.

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