What are the different kinds of files? And how do I know when to use them?

• Hand files are wide and flat and can be used for miscellaneous purposes, like deburring, smoothing edges, and finishing workpieces.

• Pillar files are thin and good for grooves and slots.

• Square files are suited for removing metal to make rectangular holes and slots bigger.

• Three square files (triangular files) are designed to trim down internal angles or make triangular slots.

• Precision files, also called Swiss-pattern files, can come in many shapes and sizes, but they are unified by the fine, x-shaped grooves that cover them. Swiss-pattern files are good for smoothing out complex or delicate features that require precision. Learn more.