Boring on the Mill - 7: Single and Multiple Stage
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.

Boring heads can also be used to machine one or more diameters and steps. These boring bars may or may not be micro adjustable.

Single stage boring bars will make one step in the work piece (figure 1)

Multiple stage boring bars will make two or more steps in the work piece with a single linear feed. (figure 2)

Figure 1
Figure 2
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label: boring on the mill, rough cut, finish cut, spring back, cleanup, multiple stage boring, uses of boring bar, feed rate, coolant