Gunsmithing What is this called?

[.308mk4]

What is the correct name for this bit?

 

[Warpath]

Deburring bit I think but don't quote me on it.

 

[medic727]

It is called a burr. They can be made from high speed tool steel or carbide. Even though it is called a burr, its' primary use is not deburring. There are, at least, a couple of dozen standard shapes. In fact, when you go to the dentist most people think the dentist is using a drill, its' actually called a dental burr. To get an idea of the variety of burrs: Carbide Bur, Metal Cutting Tool: Martindale Products Rotary Burs

 

[hangunnr]

We call them rotary files.....

CR

 

[lash]

It is called a burr. They can be made from high speed tool steel or carbide. Even though it is called a burr, its' primary use is not deburring. There are, at least, a couple of dozen standard shapes. In fact, when you go to the dentist most people think the dentist is using a drill, its' actually called a dental burr. To get an idea of the variety of burrs: Carbide Bur, Metal Cutting Tool: Martindale Products Rotary Burs

^^^^This^^^

 

[Boogaloo]

And that particular one you show in the picture is a single cut variant. There are double cut variants as well which are a bit more aggressive on the cut but a little easier to control when using them with hand tools like a die grinder for example.

 

[.308mk4]

Thanks guys.

 

[diverdon]

Mostly Carrbide burrs are used in hand held die grinders (spinning 18,000-25,000RPM) The work if small can be held in a vise. If you want to hand hold the work piece you can put the Burr into a drill press, set it for its highest RPM, and hand stroke your work piece. This can work well if you want to cut to a lay out line. They will work much nicer with the teeth beeing feed into the work. If you try to climb cut you can loose control REAL FAST.

Use good safety glasses.

The ships make nasty slivers.