Actually, creating the neck of the guitar is a fun exercise and a different task than the rest of the guitar building in that it a sculpted work instead of a construction project. Chisels, rasps,files and sandpaper are used to coax out a pleasant feeling shape. It is mostly done by eye and feel. Many builders use a machine of one sort or another to rough out the neck shape, and merely sand it smooth. I, however enjoy the carving experience. Also every one of my guitars are different, requiring a different shape to the neck. How boring it would be to make the same thing over and over again. Plenty of factories in this world do business like that, so no need for me to follow that path.