Create a base for the saw mill. Drill two holes through four 6-inch-by-6-inch-by-8-foot landscaping timbers, using a 2-inch spade bit. Place the holes along the center line of timbers, 2 feet from each end of the timber.
Insert two, 8-foot long by 2-inch diameter sections of galvanized pipe though the holes in the timbers. Space the timbers 2 feet apart, along the pipes, with one timber at each end.
Drill down though the timbers and into and though the pipes with a 1/2-inch drill bit. Fasten the pipes to the timbers with 8-inch-long-by-1/2-inch-diameter machine bolts and a wrench.
Fasten the frame of a band saw carriage parallel along the top outside edges of the landscaping timbers with 2-inch-long-by-1/2-inch-diameter lag bolts and a wrench.
Bolt the horizontal mounting brackets on the band saw to the mounts on the band saw carriage with 2-inch-long-by-1/2-inch-diameter machine bolts and a wrench.
Place the wood stock on the base of the band saw mill. Turn the elevation crank on the band saw carriage up or down, with your hand, to set appropriate height for the thickness of lumber you wish to cut.