Workpieces with a maximum diameter of 4,800 mm are machined on CNC-controlled jig boring machines. In addition to new CNC deep hole boring mills, which drill to depths of up to 1,000 mm with the highest surface quality, FEST-SPAN also has CNC-controlled travelling column milling machines. Workpiece sizes of up to 8,000 x 5,000 mm can be machined on these machines.