FIGURE 4- Boring the inside of a hole to exact size with a boring tool held in a boring head.
STANDARD MILLING VS. CLIMB MILLING
It is important to understand that the cutting action of a milling cutter varies depending upon the direction of feed. Study the relationship of cutting edges to the material being cut as shown in Figure 5. Note that in one case the tool will tend to climb onto the work, whereas in the other case the tool will tend to move away from the cut. The result is that climb milling should be avoided except for very light finishing cuts.