so my goal is to do a dry lay up in the alum moulds   put them together , put them in the press under 5ton of pressure , pull resin ,  bump the press up to 40 ton and hit it with heat to cure the resin.  
I am using heat cured resin  so the parts will not deform in the sun on the beach.   Resin cures  in I hr at 180 degrees. 

my press is has plates top and bottom and will be pressing in between them  so warpage should be little to none.. (  proto types were pressed this way with MDF moulds)