System Three Epoxy Hardener, Fast, 1/2 Gallon. A 100% solids, medium modulus epoxy system, that works well in 90% of all epoxy applications. It is great for wood construction and repair, gel coat blister repair, and general fiberglass work.
Use at a simple 2:1 ratio with any of three hardeners - fast, medium or slow - allowing excellent pot life and cure-time control. Depending on choice of hardener, can be used at temperatures as low as 350F with no limitations on humidity.

When selecting a hardener, consider the minimum temperature expected during application and the required pot life. If required, a mixture of 2 hardeners will provide extra fine tuning for cure times. The medium-low viscosity of System Three General Purpose Epoxy allows for use "as is" for coating and fiberglass work.
Combine with different fillers to make excellent adhesive, filleting and fairing compounds. Color: Amber

A selection of hardeners provides complete control of pot life and cure times
At 77 degrees, a 100 gm mixture using #1 (Fast) Hardener gels in 15 min. and be tack-free in 2 hours
At 77 degrees, a 100 gm mixture using #2 (Medium) Hardener gels in 30 min. and be tack-free in 4-6 hours
At 77 degrees, a 100 gm mixture using #3 (Slow) Hardener gels in 60 min. and be tack-free in 9 hours