I came across this picture of the press used by North. Presssure = 170,000 pounds of pressure ( pressumable over the entire surface of the board).
Link to North site
Which looks almost identical to the pnuematic presses used to make snowboards.
GrafSnowboards DIY site
that used 6 bar (c. 90 psi)
However, I was under the impression that snowboards don't have concave so what does North kites do differently to their press that accomodates concave without the top part of mold causing dry spots in the middle of the board where the top surface bends over it?? Anyone know?