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Yes, as Hanaldo has said you need 4 layers, 2 layers of 450g mat (even laid up resin rich, as the Uni-Mould system is) is still only around 2mm, a fibreglass mould of this size would need to be *at least* 4mm thick. Again, to reiterate Hanaldo's comments, the Uni-Mould system relies on its own exotherm to cure properly and this exotherm is only reached when there is adequate laminate thickness, which is 4 layers of 450, applied 'resin rich'.
Was there any reason why you only went with 2 layers of 450g? - I'm just trying to get a handle on whether the instruction to use 4 layers needs to be clearer in our instructions for the Uni-Mould system.
Matt Statham Easy Composites / Carbon Mods - Technical Sales
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