Oi!
I like Alaia so much, that I already made three (1st one broke ).
Usually I would make the core with bonding thin ply-boards, pressed down to the rocker table with exact Alaia bottom shape, and go from there.
For the latest Alaia I used veneer, cross laminated it (to save on FG cloth and carbon strips ), so basically I created a ply-board core again. I nailed the flex of my 2nd Alaia, and it feels solid, compared to the 2nd which has a bit of wobble.
I've put a lot of effort in making the upper part of the press, that compliments the bottom shape/rocker table, so now all the sections of the board get pressed with more or less the same force. And I must say I got rewarded, because the biggest air bubble in the bottom FG laminate (between TPU/ABS top sheet and bamboo veneer) was like 3x3 mm and it has no company
Just for comparison, I had several bubbles of size 10x10, 5x30 cm,... and yes I said cm, on Alaia2.
Photo or two.
Find rocker table photos in Alaia2 folder.
All comments and questions welcome.