Assessments - 5, GPA: 4.2
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5. As your leading hand gets within 4" of the cutterhead, lift the push block up and over the cutterhead and place it on the work- piece as it passes over the outfeed table. Do the same thing when your trailing hand nears the cutterhead and try to maintain pressure on the outfeed table. Never let your hands get closer than 4" from the cutterhead! 6. Repeat steps 4-5 until the surface is flat. OPERATIONS -23 OPERATIONS -24- Edge Jointing Edge jointing is passing the workpiece over the jointer on its edge as shown in Figure 37. This process makes the edges of a workpiece perfectly flat. Stock must be edge jointed on the concave side. The convex side should then be cut straight with a table saw. This process is commonly used to prepare the workpiece to be glued-up as part of a larger assembly or to simply salvage warped stock. Figure 38 shows an example of an operator edge jointing. Notice that the operator’s body is not directly in line with the stock and that he maintains a stable hand position while keeping the board firmly on the table and against the fence. To perform an edge jointing operation: 1. Follow Section 1: Safety and the “Operation Musts” in this section. 2. Place the workpiece so the concave edge is down on the infeed table and press the workpiece firmly against the fence. 3. Start the jointer. 4. Using a tight grip with your hands in a stable position and keeping the workpiece firmly against the table and fence, feed the workpiece into the cutterhead. 5. If your leading hand gets within 4" of the cutterhead, lift it up and over the cutterhead and place it on the workpiece as it passes over the outfeed table. Do the same thing when your trailing hand nears the cutterhead and try to maintain pressure on the outfeed table. Never let your hands get closer than 4" from the cutterhead! 6. Repeat steps 4-5 until the surface is flat. Figure 37. Edge jointing produces one flat edge. Portion Removed With Jointer Always wear safety glasses to prevent serious personal injury! Figure 38. This is an example of an edge jointing operation. OPERATIONS -25- Bevel Cutting Bevel cutting is very similar to edge jointing, but done with the fence tilted to a specific angle in order to produce an angled edge as shown in Figure 39. Usually bevel cuts are made on two boards that will be joined together at a corner. For bevel cuts, the model W1679 has preset stops at 45. L and 45. R. If a different angle is desired, use a bevel gauge to set the fence, then lock it in position. Figure 40 shows an example of an operator bevel cutting at 45. R. Notice that the operator’s body is not directly in line with the stock and that he maintains a stable hand position while keeping the board firmly on the table and against the fence. To perform a bevel cutting operation: 1. Follow Section 1: Safety and the “Operation Musts” in this section. 2. Set the fence to the desired angle. Place the workpiece down on the infeed table and press it firmly against the fence. 3. Start the jointer. 4. Keep the workpiece firmly against the table and fence, and feed the workpiece into the cutterhead. 5. If your leading hand gets within 4" of the cutterhead, lift the push block up and over the cutterhead and place it on the workpiece as it passes over the outfeed table. Do the same thing when your trailing hand nears the cutterhead and try to maintain pressure on the outfeed table. Never let your hands get closer than 4" from the cutterhead and always make sure that you have control over the workpiece. 6. Repeat steps 4-5 until the surface is flat. Figure 39. Bevel cutting produces an angled edge. Portion Removed With Jointer Figure 40. This is an example of a bevel cutting operation with the fence set at 45.. Always wear safety glasses to prevent serious personal injury! OPERATIONS -26- Rabbet Cutting Rabbet cutting recesses a section of a workpiece edge to create a strong but simple joint. Figure 41 illustrates a basic rabbet cut and two common joints. Figure 42 shows an operator performing a rabbet cut. Notice that the fence is positioned close to the edge of the table. The operator’s body is not directly in line with the stock and he maintains a stable hand position while keeping the board firmly on the table and against the fence. To perform a rabbet cutting operation: 1. Follow Section 1: Safety and the “Operation Musts” in this section. 2. Determine the width of your desired rabbet and set the fence that distance away from the edge of the knives. 3. Place the workpiece down on the infeed table and press it firmly against the fence. 4. Start the jointer. 5. Keep the workpiece firmly against the table and fence, and feed the workpiece into the cutterhead. 6. As your leading hand gets within 4" of the cutterhead, lift it up and over the cutterhead and place it on the workpiece as it passes over the outfeed table. Do the same thing when your trailing hand nears the cutterhead. Never let your hands get closer than 4" away from the cutterhead! 7. Rep...