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Hand Lay-up: Materials

Epoxy

These systems have the big advantage of being slower in reaction, the shell thickness can go up to 15 mm maximum thickness (and is applied in a single operation) and temperature resistance increases to 190°C after post-curing. Epoxy systems require about 24 hours curing time before the shell can be de-moulded from the tool half.

 

Polyester

The principle of application of polyesters is identical to that of epoxies, but the polymerisation rate is 6 to 8 times higher with polyesters. The shell thickness is limited to about 3 mm, but can be applied in successive layers on top of each other (even if the previous layer is fully cured).

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