General Purpose Epoxy

The final properties of the cured General Purpose Epoxy will be equal no matter which General Purpose Hardener is used. Choose which hardener to use based on your working temperatures and desired working time. Here is a general guideline to follow.

#1 Fast Hardener: 35° F (2° C) to 60° F (15° C).

#2 Medium Hardener 60° F (15° C) to 80° F (26° C).

#3 Slow Hardener 80° F (26° C) and warmer.

Some epoxy resins are prone to blushing in cold and damp conditions. Blush is a greasy feeling surface feature that can occur when the epoxy reacts with atmospheric moisture as it is curing. Blush, being water soluble and strictly on the surface can easily be removed by washing the epoxy with warm soapy water after it has cured.

To avoid the extra step of removing any blush, some epoxy formulas are specifically formulated to be blush free in any conditions. Our blush free epoxy products are; SilverTip Epoxy, Clear Coat Epoxy, and Cold Cure Epoxy.

Homebrewing your own epoxy compounds instead of using the SilverTip line of ready-to-use epoxy compounds involves mixing various fillers into a mixed batch of one of our liquid epoxies. Below are some guidelines for creating common compounds using System Three General Purpose Epoxy, Cold Cure, SilverTip Epoxy, Clear Coat, and SB-112 Liquid epoxies.

Adhesives:

1 cup of Silica Thickener to 6 oz of mixed epoxy.

or

3/4 cup of Wood Flour to 6 oz of mixed epoxy.

Fairing Compound:

1/2 cup of Silica Thickener + cup of Glass Microspheres to 6 oz of mixed epoxy.

Filleting Compound:

1 cup of Wood Flour to 6 oz of mixed epoxy.

Playdough-like Putty:

3 cups of Glass Microspheres to 6 oz of mixed epoxy.

For further detail on mixing and applying compounds, please refer to the System Three Epoxy Book.