Figure 23. Typical spindle turning operation.
Figure 24. Workpiece marked diagonally from corner to corner to determine the center.
Figure 25. Spur center properly embedded into
workpiece.
Spindle Turning
Spindle turning (Figure 23) is the operation per- formed when a workpiece is mounted between the headstock and the tailstock.
To set up a spindle turning operation, do these steps:
1.Mark both ends of your workpiece by draw- ing diagonal lines from corner to corner. The intersection point of these lines will show you the center of your workpiece. See Figure 24 for details.
2.Using a wood mallet, tap the point of the spur center into the center of the workpiece, so that it leaves a center mark, then remove the spur center.
3.Using a 1⁄4" drill bit, drill a 1⁄4" deep hole at the center mark. (Additionally, if the end of your workpiece is square, cut 1⁄8" deep saw kerfs across the corners to help embed the spur center.)
4.Drive the spur center into the center of the workpiece with the wood mallet to embed it at least 1⁄4", as shown in Figure 25.
5.With the workpiece still attached, insert the spur center into the headstock spindle.
6.With the live center installed in the tailstock, slide the tailstock toward the workpiece until the live center touches the workpiece, then lock the tailstock in this position.
7.Use the tailstock adjustment knob to push
the live center into the workpiece at least a
1⁄4".
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| Projectiles thrown from the machine | ||||
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| and operation. | |||||
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