West Systems Special Clear Hardener

Specially developed for use with West System brand 105 Resin in coating applications where an exceptionally clear, moisture resistant, natural wood finish is desired.
Blended with 105 Epoxy Resin, 207 Hardener will not blush or turn cloudy in humid conditions. Thin film applications roll out and tip off smoothly, requiring less sanding in preparation for finish coatings. An ultraviolet inhibiting additive improves the resistance of a 105/207 mixture to sunlight, but the cured epoxy surface will still require the additional protection of a quality UV filtering varnish. Designed to self level for smooth finishes, and to wet-out and bond fabrics. Mix Ratio: 3 parts resin : 1 part hardener Pot life at 72°F (22°C): 20 to 26 minutes Cure to a solid state: 10 to 15 hours Cure to maximum strength: 4 to 7 days Minimum recommended temperature: 60°F (16°C) Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 hardeners. It`s also used for laminating veneers where bleed through at joints may be exposed to sunlight.