The power tools are the tools which consume high power and convert the power into mechanical energy that drives various mechanical works to be accomplished, The industrialisation need technologies to make tools for reducing the human work in the process of developing the desired object, the technological tools that are used in the industries also provide greater efficiency in the development process.

The most common example of technological advancement of the mechanical tool is the band saw power tool. The band saws are divided into various types according to their uses. The most commonly used band saw for sale in the industry are circular band saw, bench top band saw, automated band saw etc.

The construction of a band saw for sale in various countries is divided into various mechanisms that are used in the working of the band saw, the mechanisms are: feed mechanism, fall mechanism and the tooth forms. The feed mechanisms of a band saw is the mechanism through which the material comes in contact with the saw, the various feed mechanisms are the gravity feed, hydraulic feed and screw feed. The gravity feed is the geed in which the saw moves with gravitational force towards the material, in the hydraulic feed the hydraulic force of the piston moves the band saw whereas in the screw feed the screw mechanism is used to move the band saw.

The fall mechanisms are the mechanisms that make the blade cut the material and the principle of operation of the saw, the fall mechanisms are pivot, single column and dual column. The pivot saw hinge is the principle of operation that forms the arc with a pivot in the centre which governs the angle of rotation of the blade. The single column saw have a large diameter column that rides up and down in order to cut the material. The dual column saws have a pair of columns that rides in x formation in order to cut the material.

The commonly found tooth forms in a band saw are the precision blade, the buttress blade and the claw tooth blade; these are the different forms of blades that are used to cut different materials, the precision blade is used for cutting metal using a band saw, the buttress blade is used for the log cutting in the timber industry and the claw tooth blade is used for cutting the meat with a band saw.

The automated band saw is widely used band saw for sale in the developed countries as the automated band saws are the most expensive band saws, these automated band saw provides multitasking properties in the PNC controlled cutting mechanisms, the PNC controlled mechanisms are mechanisms that act differently in different material conditions, they are designed to cut all types of materials that are used in various industries in the developed countries where the cost of labour is much higher than the cost of the machine, thus a skilled labourer is employed who can perform all the jobs of an automated hand saw.