Formlabs Grey PRO V1 resin (Form 3+) 1L

High-precision engineering resin for versatile functional prototyping

Formlabs Grey Pro Resin is a professional-grade engineering material designed for parts that require a combination of high precision, moderate elongation, and low creep. Unlike standard resins, Grey Pro is formulated to maintain its dimensional integrity under stress and repeated handling, making it an essential choice for rigorous hands-on testing and mechanical assemblies. Its matte grey finish provides excellent visual clarity, allowing for the easy inspection of fine surface details and intricate internal geometries.

This material offers improved toughness and higher heat resistance (HDT of 78 °C @ 0.45 MPa) compared to general-purpose resins. Whether you are producing injection-moulded product prototypes, complex jigs and fixtures, or mould masters for silicones and plastics, Grey Pro delivers the stability and accuracy required for professional engineering validation. It is specifically engineered to absorb shock and impact energy, ensuring that functional parts remain intact during environmental testing.

Key features and industrial benefits:

• Low Creep: Exceptionally resistant to deformation over time, ensuring parts hold their shape under long-term mechanical stress.
• High Precision: Optimised for creating "looks-like" prototypes with smooth surfaces and sharp, industrial-grade details.
• Enhanced Toughness: Higher elongation and impact resistance than standard resins, making it suitable for functional assemblies.
• High Heat Resistance: Withstands elevated temperatures, allowing for the testing of hot air, gas, and fluid flow through printed components.

Common applications:

• Functional Prototyping: Ideal for parts requiring rigorous hands-on testing and repeated mechanical movement.
• Mould Masters: High-detail patterns for secondary processes such as vacuum casting or silicone moulding.
• Form and Fit Testing: Perfect for verifying tolerances in complex assemblies and consumer electronic housings.
• Manufacturing Aids: Robust jigs, fixtures, and drill guides that maintain accuracy in a workshop environment.

Compatibility:

Grey Pro Resin has specific hardware requirements to ensure optimal print quality:

• Printers: Formlabs Form 3+, Form 3B, and Form 2.
• Resin Tank: On the Form 2, this material requires the Resin Tank LT.
• Note: For Form 4 users, Grey Resin V5 is the recommended high-speed alternative for this material.

Post-processing

Washing

The foundational step in any SLA post-processing workflow is to remove any excess resin on the surface of the parts through an alcohol or ether wash.

Curing

Post-curing for General Purpose Resins is optional. However, Formlabs recommends a short post-curing to reduce surface tack and improve mechanical properties.

Technical Data Sheet (TDS) | Safety Data Sheet (SDS)