What should be used to remove a burr after making a hole in metal?

When it comes to removing burrs after making a hole in metal, a deburring tool is the most efficient and suitable option. This specialized tool is designed to precisely and effectively remove any sharp edges or unwanted material left over from the drilling or cutting process, resulting in a smoother finish and improving safety during handling.

While a flat file and a half round file can also be used for deburring, they are more general tools intended for shaping and smoothing surfaces, rather than specifically designed for the task at hand. A flat file is useful for creating flat surfaces while a half round file can handle both concave and flat areas, but they may not be as effective as a dedicated deburring tool when it comes to fine-tuning edges and dealing with the internal surfaces of a hole.

An angle grinder is quite a powerful tool, but it is generally overkill for removing burrs and may cause damage to the surrounding material due to its high-speed operation and large surface area. Moreover, it can introduce new burrs or sharp edges if not handled with precision, further complicating the job.

In summary, using a deburring tool is the most targeted and efficient method for removing burrs after making a hole in metal, ensuring a clean and safe finish.