Not exactly. A wooden buck is the wooden "lattice" you've seen. It is not used to hammer directly over. It is used as a gauge to place your panels over for reference as you are shaping them. Shaping is done thru a variety of old techniques but IMO the best and fastest way to is to use a power hammer. If you have a car to take a pattern off of with paper you can get a very accurate shape and know exactly where to shrink or stretch. You can also use the buck sections as seen below:
I don’t want to kidnap this post... but it seemed to come to an abrupt end. I have a body in progress as of today. Search 1963 250 GTO and you’ll find it or should
Sorry, I’m afraid it took much too long to give away. I stopped counting after I got 100 hours in. I might sell the files as a download someday but not until I’m done making custom bucks and furniture with it.