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What is a deburring cutter?

What is a deburring cutter?

Shop for Deburring Tools

A deburring cutter A deburring cutter is designed for use in a machine or drill chuck, although this type of deburrer can also be used by hand for light deburring applications if a hand-held deburrer is not available.
Deburring cutters can be used on a variety of non-hardened materials The deburring cutter can be used on non-ferrous metals, wood, plastic, copper and nylon.
Deburring cutters are best used with a machine These cutters are best used in a machine (e.g. lathe, pillar drill) to drive them into the workpiece and remove burrs.
The deburring cutter has a single cutting edge for removing burrs on the edge of holes. Most models have only one cutting edge, positioned on the side of the tool.
The spinning chuck holds and spins the tool, and this removes any burrs When a deburring cutter is installed in a machine, the chuck spins it in a clockwise direction. The chuck jaws grip the cutter’s shank and spin the tool at a much faster pace than a hand-powered deburrer, resulting in a much quicker and neater finish.
A light downward pressure is applied The cutter, when spinning, is then moved downwards onto the workpiece, applying a light pressure to remove any burrs.


More material is removed leaving an angled edge. This is called a countersink Deburring cutters will not only remove the burrs, if they are applied under great pressure to the workpiece, there is the possibility of the cutter taking out extra material. When any extra material is removed, it will create an angled edge called a countersink.
Deburred hole showing minimal material removal, countersunk hole, showing a wider edge and more material removal Generally, these cutters are used for deburring applications, but are favoured as a countersinking tool.

They are designed to be used in a machine (lathe, pillar drill) or drill chuck for countersinking, with the option of being used as a deburrer if a countersunk hole is not required.

Countersinking, is where an entrance to a hole is machined at an angle. This allows the heads of screws and bolts to sit below the surface.

What sizes are available?

Deburring cutters share their name with zero fluted countersinks The deburring cutter is available in a range of sizes.
     Deburring cutters share their name with zero flute countersinks. If you are looking for a specific size they might be listed with this alternative name.
The deburring cutter has a hexagonal shank, designed for easier grip Deburring cutters with a hexagonal shank can be purchased in the following size ranges:

  • 2 – 8mm (564 – 516“)
  • 5 – 13mm (1364 – 3364“)
  • 7 – 20mm (932 – 2532“)

A deburring cutter is measured by the minimum size hole and the maximum size hole it can deburr. For example, a 2 – 8 mm deburring tool will deburr a hole as small as 2mm and up to 8mm in size.

A larger size deburrer, has a rounded shank instead of a hexagonal one. If the size required for the job is greater than 20mm, the tool can sometimes then be named a zero flute countersink, and a larger range of sizes is available for purchase.

These will have a round shank instead of a hexagonal shank and will be used for much larger deburring applications.

Wonkee Donkee Tools