Crystic® Tooling Resin
Skin Coat VE679PA

Product info

Crystic® VE679 PA (Thix HV)

Highly Thixotropic Vinyl Ester Skincoat Resin for Superior Surface Finish

Crystic® VE679 PA (Thix HV) is a pre-accelerated, highly thixotropic, DCPD-modified vinyl ester resin developed for hand lay-up and spray lamination where surface finish, blister resistance, and print-through control are critical.

Specifically formulated as a vinyl ester skincoat, VE679 PA (Thix HV) provides excellent cure in thin laminates and can be applied to vertical or complex surfaces without drainage. When used as a skincoat beneath structural laminates, it significantly improves surface quality and long-term durability, making it ideal for marine, tooling, and swimming pool applications.

Key Features & Benefits

Highly thixotropic formulation

Enables application on vertical and contoured surfaces without sag or resin drainage

Optimised for skincoat applications

Achieves reliable cure in thin laminates with excellent surface quality

Reduced fibre print-through

Produces smooth, durable cosmetic surfaces beneath structural laminates

Excellent blister resistance

Supports long-term performance in marine and water-exposed environments

Hand lay-up & spray compatible

Suitable for manual and spray lamination processes

Improves final part appearance

Enhances surface finish and reduces post-finishing work

Applications

Crystic® VE679 PA (Thix HV) is recommended for:

Marine skincoats
Hulls, decks, and marine mouldings requiring enhanced surface finish
Tooling applications
Cosmetic surface layers beneath structural laminates
Swimming pools & wet-area structures
Where blister resistance and surface quality are critical
Hand lay-up & spray lamination processes
Cosmetic laminate layers
Used prior to structural vinyl ester or polyester backing laminates

Resin Properties (Uncured)

Appearance: Red / Brown
Viscosity (Thixotropic):
- ~2.5 dPa·s (ICI Cone & Plate @ 25°C)
- ~2550 mPa·s (Brookfield Spindle 3, 5 rpm @ 25°C)
- ~800 mPa·s (Brookfield Spindle 3, 50 rpm @ 25°C)
Gel Time @ 25°C:
- ~25 minutes with 2.0% Butanox® M50
Storage Stability: Up to 6 months at ≤20°C

Mechanical & Thermal Properties (Cured)

(Post cure applied)

Barcol Hardness: ~35
Heat Deflection Temperature (HDT): ~94°C
Tensile Strength: ~52 MPa
Tensile Modulus: ~3.0 GPa
Elongation at Break: ~2.1%

Processing & Handling

Crystic® VE679 PA (Thix HV) is pre-accelerated and designed for cold curing. It requires only the addition of a medium-reactivity MEKP catalyst, such as Butanox® M50, at 1.2–2.0%.

Important: Catalyst and accelerator must never be mixed directly together.

Post curing is recommended to achieve optimum chemical, water, and heat resistance before placing parts into service.

Packaging & Availability

20 kg pail
200 kg metallic drums
Bulk supply available on request

Technical Data Sheet

Crystic® Vinyl Ester Skin Coat Resin VE679PA

ATL Technical Support
ATL Composites provides technical support, catalyst selection guidance, and processing advice to ensure Crystic® VE 671-03 PA is correctly specified and optimised for chemical, thermal, and structural performance.

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.

latest news

Restoring History. Supporting Craftsmanship.

A beautiful piece of Tasmanian sailing heritage is preparing to return to the water. The D-Class yacht “Peri” (D16) is currently in the final stages of restoration by the skilled team at Tasmanian Shipwrights & Co in Kettering, Tasmania. Originally built in 1950, Peri is one of the iconic Derwent Class yachts that have been...

Read

Timber Epoxy Construction for Golden Globe Target

Newcastle-based Mike Smith is hoping that the third time is a charm, and his family, friends and supporters are behind him all the way in his quest to compete in the 2026 Golden Globe Race. While he remains determined to complete his boat ahead of the race deadline, Smith admits it may just be too...

Read

Advanced Composite Materials Manufacturer

Advanced Composite Materials Manufacturer Engineering Performance from Chemistry to Structure Across marine, defence, transport, industrial manufacturing and construction, advanced composite materials are redefining structural engineering. Lightweight, corrosion-resistant and exceptionally strong, composites are replacing traditional materials such as steel, aluminium and timber in applications where performance, durability and lifecycle efficiency matter. At the forefront of this...

Read

Structural Composite Panels Driving Modern Engineering

Structural Composite Panels in Modern Engineering The Evolution of Structural Sandwich Panels by ATL Composites Across construction, transport, defence, industrial manufacturing, and modular building, the use of structural composite panels is rapidly expanding. Engineers and specifiers are increasingly replacing traditional materials such as steel, aluminium, and timber with structural sandwich panels that deliver superior strength-to-weight...

Read

COOSA – Lightweight Strength Driving New Composite Potential

Coosa® and ATL Composites’ Role in Australia’s Composite Evolution Across modern boatbuilding and structural composite construction, the shift away from traditional timber cores is accelerating — driven by performance demands, lifecycle durability, and weight reduction. At the centre of that evolution sits Coosa® Composite Board, globally recognised for its high-performance structural panels. In Australia, that...

Read

Bio Epoxy Solutions for Architectural Timber Craftsmanship

Thor’s Lore Reclaimed Timber. Renewed Purpose. Finished with Bio Epoxy Innovation. Recycled and reclaimed timber is more than a material at Thor’s Hammer — it’s a philosophy. Built on Craft, Heritage, and Sustainability Nestled on the leafy edge of Griffith in Canberra, Thor’s Hammer operates from a purpose-built 11,000-square-metre headquarters housing a skilled team of...

Read

New Life for SOUTH PACIFIC II

South Pacific II, the 75-foot timber motor yacht built by Norman R. Wright & Sons and launched in 1962 as “Beryl May”, returned to the boat builder’s Brisbane headquarters in early 2023 for 18 months of upgrades and refurbishments for its new owner. South Pacific II is considered one of the standout vessels from Norman...

Read

Australian Made and Perfect for High Load Bonding

As epoxy formulators with more than 40 years of experience and in-house technical expertise, ATL Composites has the flexibility to tailor products for specific markets. We are excited to introduce a new high performance adhesive into our TECHNIGLUE range. Techniglue R28 is a thixotropic, toughened system specifically formulated for applications requiring high-strength adhesion. With excellent...

Read

vdL Composites returns to METS in 2024

ATL Composites will exhibit with joint venture partners M.u.H. von der Linden GmbH based in Wesel as vdL Composites GmbH at the 36th METSTRADE Show, running 19 to 21 November 2024 in Amsterdam. The world’s largest B2B marine event, showcasing the products and services of more than 1,540 exhibitors from 53 countries, will occupy 11 halls...

Read

ATL Composites preparing for AWBF 2025

Celebrating 45 years in business in Australia in 2025, ATL Composites will attend the Australian Wooden Boat Festival, 7 to 10 February 2025 as an exhibitor and proud sponsor. ATL Composites has been a long-time supporter of the biannual AWBF and attends each event with the aim of reconnecting with customers and industry. In 2025,...

Read

Edencraft Creative expands with Composites

Since 2022, Josie Maher-Eastman has been the General Manager of her family’s businesses: Edencraft International, Edencraft Marine and Edencraft Creative. Based in Geelong, Victoria, Edencraft International manufactures worldclass fibreglass, offshore fishing boats ranging from 6 to 7.77-metres that can be further customised to meet the needs of recreational and commercial anglers. Linked by brand, Edencraft...

Read

Custom Designed BATHING BEAUTY built to last with WEST SYSTEM Epoxy

The inspired boat builders at Tasmanian Shipwrights & Co have created a one-of-a-kind, totally indulgent, yet highly practical project – a custom-designed and built wooden bathtub. Conceived to take pride of place in the bathroom of a hempcrete home in Franklin Tasmania, the bathtub is the brainchild of homeowner, Dan Rawlins and boatbuilder Nathan O’Neill....

Read