As Gil says there is cold molding and hot molding, I do not know what the temperature dividing line is between the two. The Vidal process did use a heat set resin that required baking, with Whirlwind being one example of that build technique. All these would have been built around/after WW2 when these (urea formaldehyde and other) resins became readily available. Epoxy, polyester & vinyl esters do not need to be heated for the resin to set. In fact, they give off heat as they set. Would building a stripper with Titebond III be considered cold molding? Then there is Haskell, which boiled plywood in water and formed it into a canoe shape over a male mold. The albumin adhesive had previously been heat-fixed when the sheet of plywood was made. Boiling in water made the 3-ply (1/16 birch/redwood/birch) flexible enough to de-form into a canoe shape. Just by looking at the canoe, it is often not obvious which technique was used. Tom McCloud