Heule Precision Tools will launch the BSF tool for automated high-volume back-spotfacing and counterboring operations. The tool features a counterbore ratio of approximately 2.3×D and is suitable for cutting diameters ranging from 6.5 to 20 mm without needing to turn over the workpiece. Because the machining is applied from the same side as the bore is drilled, it is possible to apply spotfaces or counterbores in areas that are difficult to access, such as bores between the forks of yokes or screw- head countersinks, the company says. The coated blade can work materials such as aluminum, steel, Inconel and titanium. The tool’s blade unfolds by activating the spindle with an initial rpm and by the gravity of its own weight. An impulse of coolant folds the blade back on demand, requiring the machine to be equipped with an internal coolant system with approximately 20-bar working pressure.