What is the correct procedure when using a reamer to finish a drilled hole?

When using a reamer to finish a drilled hole, it is essential to turn the reamer only in the cutting direction. This is because a reamer is designed to cut material as it is turned in a specific direction, allowing for a precise and clean finish on the hole. The cutting edges of the reamer are engineered to remove material effectively when rotating in one direction, resulting in an accurate diameter and smooth surface finish.

Using the reamer in the cutting direction also promotes chip removal, reducing the likelihood of clogging or gumming up the tool. This ensures that the reamer can work efficiently and maintain its cutting capabilities throughout the process. Turning in the incorrect direction can damage both the reamer and the workpiece, making it crucial to follow this procedure for successful hole finishing.