Weird cutting tool.

[Braeden P]

I got this in a box of end mills and it is left handed but really weird looking in the form

 

[jmkasunich]

I think its a reamer

 

[Martin W]

I think it’s a left hand end mill maybe for a CNC mill
Cheers
Martin

 

[brino]

Braeden,

Likely is a reamer, but is still a right-handed tool, look at the cutting edge.
It needs to be turned clockwise from above to cut.
Although the spiral flutes are reverse what a typical drill bit has.

-brino

 

[Braeden P]

Might be a reamer that is what I first thought but why would they make one left handed and it would be a chucking reamer.

 

[Braeden P]

Braeden,

Likely is a reamer, but is still a right-handed tool, look at the cutting edge.
Although the spiral flutes are reverse.

-brino

I messed that up right handed down cutting then I will have to measure it to see if it is a reamer.

 

[Braeden P]

It is a few thou over 1 inch so it probably is a ream but it pushing work down does not make sense to me.

 

[benmychree]

Sometimes reamers are made with flutes like that to avoid hogging in, and made spiral so that they can be used in holes with keyways or other slots, etc.

 

[Superburban]

It is a few thou over 1 inch so it probably is a ream but it pushing work down does not make sense to me.

Spiral flutes are for cutting holes that have interrupted cuts, oil slots, or the like. Pushing the chips forward makes sense for something that is open on both sides. It will not dig in like a drill, but instead takes pressure to make the cut. I'm thinking something specific like king pin, or wrist pin reamer.

 

[Braeden P]

Spiral flutes are for cutting holes that have interrupted cuts, oil slots, or the like. Pushing the chips forward makes sense for something that is open on both sides. It will not dig in like a drill, but instead takes pressure to make the cut. I'm thinking something specific like king pin, or wrist pin reamer.

Thanks a lot that clears things up.