If an edge finder has a tip diameter of 0.200 inches, what distance must the table move to align it to the edge of the workpiece?

To determine the distance the table must move to align the edge finder with the edge of the workpiece, it’s important to understand how an edge finder operates based on its tip diameter. When an edge finder touches the edge of the workpiece, only half of the tip diameter is actually used to indicate that alignment.

In this case, the given edge finder has a tip diameter of 0.200 inches. Therefore, to find the distance needed to move the table to align the edge finder with the edge of the workpiece, you would take half of that diameter:

0.200 inches ÷ 2 = 0.100 inches.

This means that when the tip of the edge finder comes into contact with the edge of the workpiece, the spindle must then be moved back by half the diameter of the tip (0.100 inches) to establish true alignment.

Thus, the correct answer is the movement of 0.100 inches, which allows for accurate positioning of the tool relative to the edge of the material being machined.