In the twenty-first century, a new and advanced technology is being developed: miniaturization of gadgets.Miniaturization of devices is necessitated in several fields by the development of micro-and nano-scale components. From sub micron to several hundred microns, these components offer a high tolerance for a range of technical materials. A few examples of these fields include: optics, electrical devices, medicine, biotechnology, and aviation. As part of this study, researchers looked at the most current advances in micro cutting, micro electrical discharge, laser, and focused Ion Beam Machining (FIBM) technologies. During the comparison of four distinct machining methods, other criteria such as the material of the work piece, the minimum feature size, the maximum aspect ratio, and the surface polish were also taken into consideration.