Hi,

You are definitely towards the limit of infusion in terms of thickness.  You ideally would need something with a long pot life and infuse it really slowly, ie mm's per minute as you need the time to allow the resin to soak through to the bottom.

You might find that wet-lay vacuum bagging is more successful in the long run as you can wet it all out layer by layer then reduce the weight and improve resin/fibre ratio and compression with the vacuum bagging.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant