Final answer:
Spiral reamers should not be used with mounted power drives due to the increased risk of tool and workpiece damage; the correct answer is A. Always.
Step-by-step explanation:
Spiral reamers are precision tools used in metalworking to finish holes to a precise size and smoothness. They are designed with a helical flute that helps in removing chips from the hole as it is reamed. The use of spiral reamers with mounted power drives is typically not recommended due to the potential for the power drive to cause the reamer to grab the material, leading to potential damage to both the workpiece and the tool.
As a result, the correct answer to this question is A. Always, indicating that spiral reamers should always be used with caution when considering the use of mounted power drives.Spiral reamers should not be used with mounted power drives due to the increased risk of tool and workpiece damage; the correct answer is A. Always.