Companies looking to increase their CNC milling capabilities without paying the high costs associated with complex upgrades should consider purchasing the Single Axis Controller from SilverCNC. This affordable joystick makes it a wise decision for retrofitting machines dating back to the year 2000 because it allows older machines without a fourth-axis function to perform multi-angle machining. Operations are substantially simplified by the controller, which eliminates the need for separate programs for the touchscreen and the machine tool.