While many woods can be used for carving, there are some clear favorites, including Aspen, Basswood, Butternut, Black Walnut, and Oak. Because it has almost no grain and is notably soft, Basswood is particularly popular with beginner carvers. It is used in many lower-cost instruments like guitars and electric basses. Aspen is similarly soft, although slightly harder, and readily available and inexpensive. Butternut has a deeper hue than Basswood and Aspen and has a nice grain that is easy to carve, and thus friendly for beginners. It's also suitable for furniture. While more expensive that Basswood, Aspen, and Butternut, Black Walnut is a popular choice for its rich color and grain. Lastly, Oak is a strong, sturdy, and versatile wood for carving with a defined grain. It's also a popular wood for furniture making.
Along with stone, clay and animal parts, wood was one of the first materials worked by early humans. Microwear analysis of the Mousterian stone tools used by the Neanderthals show that many were used to work wood. The development of civilization was closely tied to the development of increasingly greater degrees of skill in working these materials.
“I do a lot of finish-sanding freehand, without a sandpaper block, so I can smooth edges and get into nooks and crannies. But the finer grits are usually bonded to thinner paper and, at least for me, the paper is too thin and ends up tearing long before the grit wears out. So I apply duct tape to the back of the sandpaper. The sandpaper is still flexible enough to sand a tight radius and it’s far more durable. You can use this super-strong sandpaper like a shoeshine rag.” — Chuck Merchant