How much So-Strong can I add to my urethane material?

SO-Strong® liquid urethane colorants can be added to any Smooth-On liquid urethane rubber, urethane plastic for urethane foam (do not use with Smooth-On silicones). They can be used to create a variety of color effects for a wide range of material applications. For glowing fluorescent color effects, use Ignite colorants.

SO-Strong® colorants are highly concentrated, offer excellent dispersion and consistent color. A very small amount will color a proportionally large amount of liquid urethane material. The more you add in proportion to the volume of liquid urethane, the more dramatic the color effect. Recommended loading range is .01% to 3% of total system weight. Do not overload the liquid urethane system or cure inhibition / oozing may occur.

If this is your first time adding color to a urethane system, it is recommended that you test the color effect by adding a few drops to a small amount of material and observe the outcome.

Color Tints: Black, Brown, Yellow, Purple, Green, Orange, Red and Blue.

Color Pigments: White and Fleshtone

Disclaimer
This FAQ article is offered as a guideline and offers possible solutions to problems encountered during mold making and casting. No warranty is implied and it is up to the end user to determine suitability for any specific application. Always refer to the provided Technical Bulletins (TB) & Safety Data Sheets (SDS) before using any material. A small scale test is suggested to determine suitability of any recommendation before trying on a larger scale for any application.