Why is it important to clean small chips left on the spindle nose of the lathe?

Cleaning small chips left on the spindle nose of the lathe is crucial to avoid run out on work holding devices. Run out refers to the deviation from true circular movement of the workpiece that can occur if the work holding mechanism is not perfectly aligned. When chips build up, they can create an uneven surface that interferes with the proper seating of the work holding devices, such as chucks or collets. This misalignment can result in vibrations, decreased accuracy, and poor surface finish on the machined parts.

Eliminating chips ensures that the workpiece is securely and evenly mounted, allowing for better performance of the lathe and achieving precision in machining operations. This focus on cleanliness not only improves the quality of the finished product but also contributes to the overall efficiency and safety of the machining process.