MAG Cincinnati's E Mill is a solution for the machining of long, small-cross-section parts used in aerospace, construction, shipbuilding, and wind power. It is suited for titanium, aluminum, and composite work on stringers, spars, beams, and similar parts. The system performs contour machining, routing, drilling, and tapping to produce finished, complex, 3-D-geometry parts up to 12 m (39.4 ft) long in a single setup, reducing processing costs compared to vertical-platform machines. The system combines a 500-mm three-axis horizontal machining center with headstock and tailstock adapted from horizontal lathes to provide fourth and fifth axes of motion. The part manipulation system allows A-axis programmable rotation and 360° infinite positioning, while supplying V-axis linear travel for pull-through part feed. The machine includes a choice of 16,000 or 24,000 rpm HSK63A spindle. A drum-style automatic tool changer accommodates 12 tools up to 8 kg (17.6 lb) in weight, 200 mm (7.9 in) in length, and 125 mm (4.9 in) in diameter.