to pull the blade forward from between the blade guides. This could cause the blade to bind, come off the wheels, and even break. More waste material may need to be cut off to feed the workpiece without hitting the frame. If the workpiece is too large for the band saw, use a saber saw. Curved-Line Sawing The primary purpose of a band saw is to cut curved parts. The cutting radius depends on blade width and set. Refer again to Figure 23-39. Also, make relief cuts where the curve changes direction. See Figure 23-46. Patrick A. Molzahn Figure 23-43. Tracking adjustment is found on the back of the machine behind the upper wheel. It is usually equipped with a locking handle or wing nut. Locking handle Tracking adjustment knob Patrick A. Molzahn Figure 23-44. Side guides, behind the saw teeth, keep the blade from twisting or turning. Use a piece of paper to set them approximately 0.004″ (0.1 mm) from the side of the blade. The thrust bearing is set 0.004″ (0.1 mm) behind the blade. Guides are located above and below the table. Patrick A. Molzahn Figure 23-45. With large, curved workpieces, first cut away as much waste as possible to prevent it from hitting the machine frame. Patrick A. Molzahn Figure 23-46. Guide the workpiece with both hands when sawing curves. Chapter 23 Sawing with Stationary Power Machines 393 Copyright Goodheart-Willcox Co., Inc.