G/Flex Epoxy QT Kit & 807-2 Syringes - Tough, Flexible Bonding

In this review the G/Flex Epoxy QT Kit & 807-2 Syringes is presented as a go-to choice for makers and repairers who need a waterproof, structural adhesive that tolerates movement. The bottom line: this kit is best for projects requiring strong, flexible bonds between dissimilar materials - particularly damp or difficult-to-bond woods, metals, plastics and fiberglass. The reviewer found the epoxy mixes 1:1 easily, offers a long working window, and cures to a durable, slightly flexible finish that handles shock and vibration without brittle failure.

Key Features

• Excellent adhesion: Bonds hard-to-bond woods, metals, plastics and fiberglass for permanent repairs and structural joins.
• Flexible toughness: More flexible than standard epoxies yet stiffer than sealants, so joints absorb expansion, contraction and shock.
• Wet surface use: Can be used on damp surfaces and, with proper technique, applied underwater for marine repairs.
• Easy 1:1 mixing: Mixed at a 1:1 ratio with 46 minutes pot life at 72F, giving a manageable open time of about 60-75 minutes.
• Modifiable system: Accepts WEST SYSTEM fillers and additives and can be used to wet-out fiberglass tapes and fabrics for composite repairs.

Who It's For

This epoxy is ideal for boatbuilders, canoe and kayak owners, metalworkers doing aluminum repairs, and hobbyists making knives or custom tools who need a resilient bond that cures to a hard, durable finish. Its ability to adhere to dissimilar materials and tolerate moisture makes it especially useful for marine and outdoor repairs.

Those who need an instant-setting adhesive, a purely rigid structural epoxy for high-temperature service, or a one-part sealant should look elsewhere. Also, if extremely fast cure times are required for continuous production, a faster hardener system would be a better fit.

Pros & Cons

Pros

• Strong adhesion to a wide range of materials including damp or difficult woods.
• Balanced flexibility and stiffness that resists shock and vibration without becoming rubbery.
• Long working time with predictable initial and workable cure windows for careful assemblies.
• Compatible with WEST SYSTEM fillers for custom gap-filling and fairing work.

Cons

• Not a rapid-cure system - initial cure in 3 to 4 hours and workable cure in 7-10 hours may be slow for some deadlines.
• Requires correct measurement and mixing at 1:1 for optimal performance, adding a small step to prep.

Specifications

Our Verdict

The G/Flex Epoxy QT Kit & 807-2 Syringes is a versatile, value-minded choice for anyone needing durable, waterproof structural bonds between dissimilar materials. Its mixability, honey-like viscosity and balanced flexibility make it well suited to marine repairs, knife making and mixed-material projects where shock resistance matters. Buy it when you need a reliable, modifiable epoxy that tolerates damp surfaces and gives you time to position parts correctly.

Frequently Asked Questions

Can this epoxy be used on wet wood?
Yes. G/Flex is designed to bond damp or difficult-to-bond woods and can be used in wet conditions with proper surface prep.

How long do you have to work with a mixed batch?
At 72F the mixed epoxy has about 46 minutes of pot life and an open working time around 60-75 minutes, allowing for moderate-size assemblies.

Can it be used with fillers and fabrics?
Yes. The epoxy accepts WEST SYSTEM fillers and additives and can be used to wet-out fiberglass tapes and fabrics for composite repairs.