23.6.1 Changing the Blade Change blades when the blade is dull or when setting up for a different sawing operation. Radial arm and table saws may use the same types of blades. However, the radial arm saw has less tendency to climb if the blade has a face hook angle of 5° or less. Casadei Busellato Figure 23-28. Beam saws are capable of processing multiple sheets at a time. Material is usually loaded from the back of the machine. When it is ready to be cut, pusher arms move it into place and the saw travels along a carriage to make the cut. Patrick A. Molzahn Figure 23-29. Scoring blades are located in front of the main blade. They precut the underside of brittle materi- als to prevent tearout as the main blade exits the cut. Delta International Machine Corp. Figure 23-30. A variety of features and adjustments are found on the radial arm saw. Fence Table Radial arm Upper guard Miter scale Blade Lower guard Yoke Column Angle scale Elevating handle 386 Section 4 Machining Processes Copyright Goodheart-Willcox Co., Inc.