WEST SYSTEM brand resins and hardeners, form a
two-part epoxy system developed by Gougeon Brothers specifically
for wood and composite boat construction. Rutan Aircraft Factory
now recommends WEST SYSTEM epoxy for certain homebuilt aircraft
applications, particularly where a moisture resistant epoxy is
desired. 105 Resin is the base material on which all of the WEST
SYSTEM epoxy systems are built. The resin is a clear, light amber,
low-viscosity liquid. It is designed specifically to wet out
wood fiber. With roller applications, it possesses excellent
thin film characteristics in flowing out and is self-leveling
without fish-eyeing. Its relatively high flash point makes it
safer to work with than polyesters. It can be cured in a wide
temperature range, then sanded and shaped. It cures quite clear
so that the natural finish shines through. 205 Fast Hardener,
when mixed with the 105 Resin in a ratio of 5 parts Resin to
1 part Hardener, yields a high-strength, rigid solid with excellent
cohesive properties and provides an excellent moisture vapor
barrier. The 105 Resin/205 Fast Hardener has a pot life of 10-15
minutes at 70°F. It is also recommended in coating applications
where natural finishing is desired. Partial cure time at 70°F
is 5-7 hours. 206 Slow Hardener is a low-viscosity mixture of
polyamines. The 105 Resin/206 Slow Hardener has a pot life of
30-40 minutes at 70°F. It is normally used when extended
time is needed for large coating and bonding applications. It
is especially well suited to working in warmer climates. Partial
cure time is 9 hours at 70°F. Order by size and hardener below. Pump sold separately.
West System User Manual ...Free