Understanding When to Use Colores Thick and Thin Hardeners

Learn which hardener to use for the jewelry component you are filling with Colores™ resin.

Last edited: 8/17/2018

For the best quality results when working with Colores, the correct hardener must be chosen. The hardener allows you to control the flow of the epoxy, based on the size and dimension of the piece and the area being filled. This allows you to achieve the ultimate goal: a smooth, flawless, glasslike finish.

 There are two main points to understand:

• Flow and viscosity.

• Surface tension or control (known as the thixotropic index).

 First, analyze the piece to be painted. One hardener will not work for all surfaces. Additives with certain hardeners will thicken the mix, giving you increased flow control. This enables you to paint on more dimensional surfaces. Remember, there is a limited range of effectiveness for each hardener. For optimum results, follow these recommendations:

1. For a flat surface with walls, use Colores thin hardener.

2. For a flat to slightly curved surface without walls, use Colores thick hardener.

3. For a slight to moderately curved surface, use Colores thick hardener with additive.

4. For severely curved and high-domed surfaces, use Colores thick hardener with additive

5. When filling cavities, choose the thin hardener to create a more fluid, filling mixture. If you’re applying Colores to a curved or flat surface, choose thick hardener, creating a more viscous mixture.