I was looking for some other pictures when I stumbled onto Gustl Spreng’s construction pictures of his KHSD 63 cat from almost 20 years ago as I recall.
I knew it was a variation on CM construction but I had not had chance to study these pictures for some reason.
I looks like he made a series of female stations and then forced the plywood into that shape. It must have also been vacuumed. The results looked excellent. I recall that core was then bagged into the inside, along with triaxial on top?
I cannot find Gustl in the googles, so if anyone helped with this hull construction, you are welcome to fill in.