It is not only particularly used for woodwork, it has been an integral part in the manufacturing industry since its development during the 1970s. With CNC, an enthusiast could have an opportunity to start a small-scale woodworking business. There are CNC woodworking machines that can duplicate the CAD program without costing you too much. CNC machines that have multiple heads mean that there can be two programs running but it is controlled with one user interface. Another feature would be the dust collection, where the wood chips are sucked up and collected. There are different CNC machines and not all of these machines are used in woodworking alone. Experts, however, warned to watch it out when machining the mirrored part. If the first part was programmed using G41 and climb milling, machining the mirrored part needs at least an extra 0.01 to the rough cutter. The reason is that on the mirrored part you will be doing conventional milling. This is where the cutter tends to go into the finished surface. Spindles rotate for about 8000 to 30,000 rpm or revolutions per minute. It could cut materials ranging from soft to hard materials like plastic and metals. It is controlled by the CNC controller. The spindle is moved by the CNC linear drive system. It has the motor, bearing system and the linear screw assembly. Once a taboo subject among woodworking professionals and hobbyists alike, CNC is now accepted as an indispensable aid in the craft of woodworking, carpentry and other related fields. With CNC, they are able to produce some amazing pieces with complex and sophisticated shapes that enhance their work. Computer Numerical Control Basically, CNC means computer numerical control. They are also more rigid, a quality that makes for more accurate cuts and drills (precision is as close as 0.0001 of an inch). This results in fewer rejects (and less waste). Speed and accuracy makes a woodworking machine far superior than a manual one. These machines are also equipped with automated cooling systems and specially formulated coolants for these intensive heat-producing tools and materials both absent from the old manual ones.