Surface Preparation
Surface Preparation
Proper surface preparation is essential for the long-term performance of this product. The exact requirements for surface preparation vary depending on the severity of the application, the expected service life, and the initial condition of the substrate. All sharp edges and welds should be rounded to a 3 mm (120 mil) radius using a grinding disc. Ideal preparation will provide a thoroughly clean surface, free of contaminants, with an angular roughness profile between 75–125 µm (3–5 mil). This is typically achieved through initial degreasing followed by abrasive blasting to a near-white metal finish, or by mechanical preparation.

Mixing
Thoroughly mix the activator into the base using a mixing stick, scraping the sides and boom of the container. Mix at a weight ratio of 2 parts Base to 1 part Activator. Stir thoroughly until a uniform, streak-free material is achieved. Never add solvent. 

Application
Use heavy plastic squeegee or putty knife to apply a 1mm minimum thickness. Work material into profile of substrate to ensure maximum adhesion and eliminate any trapped air. Shape the correct contour using the puy knife or plastic applicator. If using a mold or form, make sure to coat its surface with a release agent to prevent the material from sticking.

Application Temperature:
Keep between 55 to 95ºF (17 to 35ºC). Substrate: keep between 45 to 105ºF (7 to 40ºC). the difference in temperature of the substrate and the material should never exceed 10ºF, 5ºC. Substrate shall be a minimum of 5ºF (3ºC) above dew point. Do not apply if relative humidity exceeds 90%. If necessary, heat the metal prior to surface preparation using electric heater or heat lamp. Never use gas, oil, or kerosene heaters as they will leave a greasy residue on metal surface. For best results keep all material in warm area overnight (75ºF+) for ease of mixing.