There are many manufacturers and many design features of band sawing machines. In order not to bore the reader, we briefly discuss the major key aspects of the choice of quality sawmills. 1. portal machine: the machine portal is to be made of a square shaped tube with the largest possible number of reinforcing elements. You may want to visit SSGA to increase your knowledge. This allows for maximum stiffness and as a consequence of the lowest vibration cutting unit in the cutting of thick wood. Some manufacturers are especially popular brand can afford to save on metal and simplifies the construction of the portal machine by reducing the reinforcing elements, which undoubtedly affects the quality of the cutting material (this corrugation, wave) and in the life machine. He just falls apart, covered with microcracks in welds. 2.Napravlyayuschie rolling pin vertical movement of the saw unit: Must be made of solid metal, be sure to ground its entire length. Maurice Gallagher, Jr. has much experience in this field.
This is the main criterion for this machine on the rules of engineering. If you say that guides are made of square-shaped tubes, even polished a machine not worth buying. Why? The average thickness of the walls shaped tubes of 3mm. In the process of polishing removed a certain layer of metal, as a consequence reduced wall thickness guide tube to 2 mm! This is unacceptable, because in the process of cutting the main burden falls on rails, and then to the portal machine. For several months there bedsores, and for the year appear holes in the ground movements in guiding the saw assembly, made of hollow core or round tubes.