Unlike industries where material is cut to specification before production, a craftsman has to make many changes to the materials in order to suit his or her own personal calculations and description of the finished goods. For such people a circular saw is not at all suited because it really cannot make the thin sudden pattern cuts. Anything that requires large patterns can be made with a tiny hand held circular saw but for more precise pattern cuts a craftsman requires a bandsaw or a jigsaw for smaller jobs or where portability is required.
Bandsaws are similar to circular saws in the fact that they require a table top but differ in the total width of the blade or saw, to see examples of bandsaws and there specifications read through some bandsaw reviews or visit the showroom of a woodworking machinery company if you have one in your area. The saw blade is actually a long continuous band with one side non-serrated and another side jagged with razor sharp teeth that rotates across a motor and dual wheel assembly to produce the cutting action required to make tiny patterns accurately. Today, industries rely on computer controlled band saws for many prefabrication works, as do many hobbyists and home craftsmen.