Final answer:
Cross filing is a more aggressive filing technique used for rough work and involves moving the file perpendicular to the edge. In contrast, draw filing is a finer, more precise method where the file is pulled along the length of the workpiece, typically used for finishing.
Step-by-step explanation:
The difference between cross filing and draw filing relates to the techniques used during the filing process. Cross filing is a method where the file is moved across the workpiece in a perpendicular direction to the edge, usually in a back and forth motion. This technique is typically used for more aggressive material removal and can be done fairly quickly but is less precise. It's commonly used for the initial stages of shaping a workpiece.
On the other hand, draw filing involves holding the file at both ends and pulling it towards oneself along the length of the workpiece. This technique is used for finer, more precise work and involves a slower, more controlled application, which is ideal for finishing and smoothing the surface of the metal after cross filing or other roughing operations.
The correct answer to the question, based on the descriptions, would be C: Cross filing is used for rough work, while draw filing is for finishing.