Technirez R2578
Tooling Paste

Product info

TECHNIREZ® R2578 – CNC-Machinable Epoxy Tooling Paste

TECHNIREZ® R2578 is a low-density, CNC-machinable epoxy tooling paste engineered for the rapid manufacture of moulds, plugs, patterns, and precision tooling. Specifically designed for machine application, R2578 delivers excellent machining characteristics and surface quality, enabling accurate geometry, smooth finishes, and seam-free tooling surfaces.

Formulated with low exotherm and minimal shrinkage, R2578 can be applied in thick sections up to 40 mm on vertical surfaces, allowing fast build-ups over large areas without distortion. When applied at 25°C, the system cures to a solid state in under 24 hours and can be CNC-machined within 12–24 hours, supporting short turnaround tooling schedules.

Once cured, TECHNIREZ® R2578 produces a vacuum-tight, dimensionally stable tooling surface capable of withstanding repeated machining, handling, and composite processing operations. Its low density and predictable thermal behaviour make it well suited to large tooling structures where weight reduction and dimensional accuracy are critical.

R2578 is intended for use with dedicated mixing and dispensing equipment to ensure uniform blending and minimise air inclusion. Typical applications include CNC-machined moulds and patterns used across marine, wind energy, automotive, industrial, and advanced composite manufacturing sectors.

– Precision Machining. Fast Turnaround. Reliable Tooling.

KEY PERFORMANCE FEATURES

Low-Density CNC Tooling Paste For Machine Application
Excellent Machinability & High-Quality Surface Finish
Machinable Within 12–24 Hours @ 25°C
Low Exotherm & Minimal Shrinkage
Apply Up To 40 mm Thick On Vertical Surfaces
Produces Vacuum-Tight, Seam-Free Tooling Surfaces
Designed For Moulds, Plugs & CNC-Machined Patterns
Ideal For Marine, Wind, Automotive & Industrial Tooling

TECHNICAL SPECIFICATIONS

Pot Life	1 hrs
Cure To Solid State	24 hrs
Mix Ratio	100 Part Resin to 90 Parts Hardener by weight 1 Part Resin to 1 Parts Hardener by volume
Compatible Hardener	H2578
Physical State	Resin: Blue Paste / Hardener: Yellow Paste
Pack Size	360 kg

Technirez - Tooling Paste R2578

frequently asked questions

How does ATL tailor composite systems for different industries?

Every industry has distinct performance, compliance, and manufacturing requirements. ATL’s in-house chemists and engineers develop and refine epoxy systems, adhesives, and core materials to meet the specific demands of marine, defence, aerospace, automotive, industrial, civil, architectural, and sporting applications — ensuring every product delivers optimal strength, efficiency, and durability.

Can ATL customise materials for my project or process?

Yes. ATL offers custom formulation and process engineering support to align material performance with your production requirements — whether infusion, hand lay-up, lamination, bonding, or CNC-routed panel construction. Our technical team collaborates closely with customers to deliver precision-matched resin systems and structural solutions for unique applications.

Are ATL’s composite systems certified for high-performance applications?

Absolutely. ATL operates under an ISO 9001:2015-certified quality management system, with selected materials approved by DNV for use in structural and high-load applications. Every ATL system is manufactured to exacting standards of performance, consistency, and traceability to meet the demands of defence, industrial, and advanced engineering environments.

What makes ATL’s materials suitable for large-scale or structural builds?

ATL’s epoxy systems, structural panels, and composite cores are engineered for high strength-to-weight performance, dimensional stability, and fatigue resistance. These attributes make ATL materials ideal for large composite assemblies, modular structures, and precision-engineered components where long-term strength, weight reduction, and reliability are essential.

Does ATL offer sustainable or bio-based composite options?

Yes. ATL is committed to advancing sustainable composite technology, offering USDA-Certified Bio-Based epoxy systems and environmentally conscious materials that reduce waste, extend service life, and minimise environmental impact. Our ongoing R&D focuses on improving sustainability without compromising structural integrity or mechanical performance.

How can I select the right ATL system for my application?

Choosing the ideal composite system depends on your structure’s design, load requirements, manufacturing process, and environmental exposure. ATL’s in-house engineers and chemists provide tailored advice to ensure the correct combination of resin, core, adhesive, and surface technology for your project.
To discuss your application or request technical guidance, contact ATL’s Technical Team — we’ll help you identify the most effective and efficient composite solution for your build.

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