The machine most operators will use is illustrated here. It is a simple machine with fundamental operation procedures. The upper part of the machine is the saw blade itself. It has blade guards, (the covers that hide the majority of the blade), the saw machine controls, and blade tension handles used to keep the blade taunt and allow the blade to be changed. Some of the more expensive saws have a shock absorber type hydraulic system, which allows for the controlled decent of the saw blade. The material is placed on the saw on the table of the machine, and is held securely in place by a vise. There is usually a length stop attached to the table, so that each piece is cut exactly the same (see Setup Steps page 6)