I am thinking to try a vinyl ester  infused soric and carbon mould for use with pre preg processing.

Laminate might be 6 layers 400g carbon each side of a 4mm soric (maybe 2 of 4mm soric in areas) to make a thicker stiffer mould.

Anybody tried using a soric mould like this? I know there maybe be air left within the soric cells but it all very well supported? Heat/expansion??

Or should I use a few layers of flow mesh or shade cloth and leave in the centre of the laminate? This would mean no air in the laminate leaving a core of resin/plastic mesh.

I had one hand laminated mould 500x500x200mm sandwich design, but core was based on epoxy foam. Stiffness was great. It works ok, however only for OOA prepregs. In autoclave the mould was destroyed totaly by overpressure.