Impatient with the wait of sending robotics parts away to be machined, and with his school unwilling to let students loose on a full-size lathe, he did the sensible thing and made his own miniature one. It uses a 12 V DC motor, some aluminium framing, and 6mm stainless steel shafting, and cost around $200 to make.
Instructions to make your own are at: www.instructables.com/id/3D-Printed-Lathe/