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How to prevent burrs from forming
in drilled holes

Shop for Deburring Tools

Deburring tools are used for removing burrs in drilled holes Deburring tools are used to remove burrs from the edges of drilled holes.
When the drill bit starts and finishes the cut in the material it will produce a burr Burrs often occur at the entrance and the exit point on a workpiece, where the drill tip pierces through the material.

Entrance burrs

A small entrance burr The entrance burr is where the drill first starts cutting. These types of burr tend to be small and not very noticeable, provided that the cutting tool is sharp and correct for the task.

Exit burrs

Break through burr Exit burrs are found at the exit point of a hole, where the drill bit protrudes from the material creating a through hole.
A blind hole only goes through part of the work piece ****copy written image Exit burrs do not occur on blind holes, which are those that are made through only a portion of the material.
A blind hole is a hole machined to a specific depth, which doesn't break through the other side of the material.
When drilling a hole, ensure the correct cutting and feed speeds are selected If a blind hole is not an option, you can help to prevent burrs occurring by ensuring you have the correct cutting speed and feed speed selected (see the manufacturers operating instructions for the correct speeds).