a band saw , a band saw assembly , and a method of spatially positioning a band saw blade are suggested . the band saw comprises a band saw blade against which a sawing material is adapted to be guided in a feed direction . a guide for the band saw blade has at least one magnet exerting a force on the band saw blade determining the spatial position thereof . the at least one magnet is adjustable in its force effect and the force is directed transversely to the feed direction . the guide , as viewed in the feed direction of the sawing material , has a front magnet and a rear magnet , the magnets facing a front area and a rear area , respectively , of the band saw blade . a method of spatially positioning a band saw blade is executed while a sawing material is guided against the band saw blade in a feed direction . a magnet force is exerted on the band saw blade . the magnet force , and thereby the position of the band saw blade is adjusted transversely to the feed direction . the magnet force , as viewed in the feed direction of the sawing material , is exerted on a front area and on a rear area of the band saw blade .