Assessments - 3, GPA: 3.3
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Facilidade de uso
n Plug the biscuit joiner into a power supply and prepare to make your first cut. Grasp and hold the biscuit joiner securely with both hands. n Place the fence against the board and align the indicator marks on the fence with the centerline mark(s) on the board. n Depress the switch trigger to turn on the biscuit joiner, then push it forward to extend the blade into the wood. n When the base assembly bottoms out against the depth of cut adjustment knob setting, pull back to release pressure on the spring. The blade will retract from the biscuit slot. n Repeat this procedure for cutting the slot in the mating workpiece. n Once all biscuit slots have been cut, place a biscuit in each joint and dry-assemble the workpieces. Make sure each joint lines up and fits. n Finally, disassemble the workpieces and place a bead of glue in each slot. Also, spread a bead of glue over the entire surface of the joint. Reinsert the biscuits and assemble the workpieces as shown in figure 10. n Clamp the workpieces together until the glue sets up. BUTT JOINTS BISCUIT SLOT(S) BISCUIT(S) CENTERLINE MARK(S) MULTIPLE BISCUITS STACKED Fig. 11 OFFSET BUTT JOINTS BISCUIT SLOT BISCUIT CENTERLINE MARK(S) Fig. 12 OFFSET BUTT JOINTS See Figure 12. The rails of a table or workbench are often offset from the front of the table legs. When offsets are required, it is necessary to cut the slots in the rails first, then readjust the fence to cut the slots in the legs. Keeping this one exception in mind, the procedure for cutting offset butt joints is identical to the procedure for cutting butt joints. For example, if a 1/4 in. offset is desired, you would mark the centerlines for cutting a butt joint as mentioned in the procedures for cutting butt joints, and cut the slots in the ends of the rails. Next you would raise the fence 1/4 in. to the desired offset and cut the slots in the legs. OPERATION T- JOINTS See Figure 13. A T-joint is used when the end of a board is joined to the face of another board as shown in figure 12. Attaching shelves to bookcases and inner support braces to frames are typical applications. Actual cutting of a T-joint is as simple as any other cut. However, it is critical that you mark the centerlines, mark the intersection points for each slot, and cut each slot correctly. MAKING T- JOINTS See Figures 14 - 15. n Unplug the biscuit joiner. n Place the two pieces of wood to be joined on a level workbench. The inside face of the vertical board should be facing up. n Determine the location of each biscuit joint and mark the centerlines on each board. The centerlines for both boards must line up with each other. Measure carefully; these measurements must be accurate and precise. NOTE: Measure twice and cut once. In addition to the centerlines lining up, the spacing of the biscuit slots from side-to-side must also match. n Plug the biscuit joiner into the power supply and cut slots in all boards that require end slots. Follow the procedures explained in “Edge-To-Edge Joints.” n Set the fence angle at 90° n Set the fence height at the desired dimension on the scale. n Select the correct depth of cut setting for the biscuit size you plan to use. n Clamp the workpiece securely, then cut each slot at the marked centerline intersection. Next, you must adjust the fence on the biscuit joiner in order to cut slots into the face of the vertical board. T-JOINT CENTERLINE MARK(S) BISCUIT(S) BISCUIT SLOT(S) Fig. 13 VERTICAL BOARD HORIZONTAL BOARD BISCUIT SLOTS/ CENTERLINE MARKS BOARD CENTERLINES Fig. 14 TO CUT ENDS SLOTS IN HORIZONTAL BOARD HORIZONTAL BOARD Fig. 15 CLAMP CUTTING VERTICAL BOARDS See Figures 16 - 17. n Unplug the biscuit joiner. n Loosen the locking knob and set the fence angle at 0°. n Set the fence height at the desired dimension on the scale by rotating the height adjustment knob. n Retighten the locking knob. n Select the correct depth of cut setting for the biscuit size you plan to use. n Clamp the workpiece securely. n Cut each slot at the marked centerline intersection. n Place the biscuit joiner on a vertical board and align the indicator marks on the base assembly with the centerline on the vertical board. n Place a straight piece of wood on the vertical board and securely clamp it flush against the base assembly. This piece of wood is used for a fence or guide. It must be square with the sides of the vertical board and parallel with the centerline. n Align the centerline on the bottom of the base assembly with marked intersection for biscuit slot. n Plug the biscuit joiner into the power supply and prepare to cut the slot. n Depress the switch trigger to turn on the biscuit joiner, then push it down to extend the blade into the wood. n When the base assembly bottoms out against the depth of cut adjustment knob setting, pull back, releasing pressure on the spring. The blade will retract from the biscuit slot. n Repeat this procedure for cutting all required slots in vertical boards. n Once all slots have been cut,...