Proxxon BFW 40/E Information The Proxxon BFW 40/E is a micro milling and drilling machine that is perfect for precision work in a variety of materials, including wood, plastic, and metal. It features a direct-drive motor with three ball bearings for smooth, vibration-free operation, and a variable speed control from 900 to 6,000 RPM. The motor is powered by a separate controller that converts 230V AC to 40V DC, which provides a more stable power supply and higher torque, even at lower speeds. The BFW 40/E has a die-cast aluminum head with a 43mm spindle neck (European standard), and a large, easy-to-use switch with emergency function. A chart on the head indicates the optimum speeds for milling and drilling different materials. The machine also comes with a set of milling cutters and collets. Image