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A horizontal milling machine performs face cutting directly from the spindle and using an arbor is able to employ single or multiple cutters known as gang milling (figure 1), allowing side, face, and form machining in one operation. (figure 2)
Face cutting poses a disadvantage to the operator in that often they are not able to see the cutter path and still be at the controls in front of the machine. To overcome this problem, many manufacturers have additional controls to the side so the machine can be operated from the side, front, and back of the spindle. Although not as convenient as milling machines with a quill that extends from the spindle, drilling, reaming, tapping, boring, etc. can be achieved. Here the side controls are most helpful. (figure 3)
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