<p>➀ The article discusses the need to implement a no-volt release and emergency stop system for a CNC lathe project while minimizing new holes in the front panel; </p><p>➀ Existing front panel buttons use a 12V power supply to control relays for spindle and stepper motors, with the current emergency stop lacking a key; </p><p>➁ Options for alternative switches (e.g., LA38 series) are considered, balancing safety requirements and panel modifications, including separate controls for spindle and stepper motors.</p>