Quote Originally Posted by Kevin Jenness View Post
Not necessarily. Pneumatic pressure is an option (Fine Woodworking #63 p. 83, Pneumatic Lamination). If one runs short of clamps threaded rod is an alternative as shown here. https://woodarchivist.com/3725-makin...nation-curves/ In any event the project needs enough force distributed evenly through cauls to pull the laminates together gap-free.
Pneumatic pressure is effectively more clamps. And potentially dangerous, as said well above.