Many carpenters still use traditional saw to make furniture, but to make good quality and high precision furniture or other wood working, a carpenter will need a band saw. A band saw is a saw with a blade in a continous loop which spins in one direction. Actually a band saw is not only specified to cut wood, but there are also the kinds for metal, acrylic and a variety of other industrial materials depending on the band saw blades. A band saw is the most commonly used for cutting curves.