A rotary cutting machine 10 has a machine body 14 and an arbor 18. The arbor 18 includes a proximal rotary shaft 22 mounted to the machine body 14 for rotation, an intermediate rotary shaft 24 telescopically connected to the proximal rotary shaft via a splined connection, and a distal rotary shaft 26 telescopically connected to the intermediate rotary shaft 24 via a splined connection. A cutting tool C secured to the arbor 18 is extended and retracted via a feed mechanism 20 including first, second, and third racks 30, 31, and 32, and first and second pinions 33, 34.