whats this?

[sunnybob]

found this in a tool box during a massive spring clean. I have no memory of its age, or use.

It appears to be a spiral cutter, but the size is wrong.

The shank is 9.5mm
overall length, 74mm
cutting diameter appears to be 6.5mm.

there was a tiny bit of aluminium swarf at the top of each cutting edge as it tapered wider.

Anybody?

 

[pcb1962]

9.5mm is 3/8"
It's a slot drill or an end mill, can't see the sharp end to tell

 

[sunnybob]

the end is flat, so would that be a 6.5mm slot drill? or end mill?
Where on earth would I have got that from?

 

[pcb1962]

Are you sure it's 6.5 mm and not 6.35mm (1/4")
If the end is flat then it's neither a slot drill or an end mill any longer, probably somebody ground the end off
It's used in a collet in a milling machine

 

[sunnybob]

Are you sure it's 6.5 mm and not 6.35mm (1/4")
If the end is flat then it's neither a slot drill or an end mill any longer, probably somebody ground the end off
It's used in a collet in a milling machine

now I'm even more confused.
the spiral is a taper. from the narrow end I get 6mm on my vernier gauge, at the top where the spiral ends, I get 7.5mm, and as the flute ends, I get the full 9.5mm.
Huh?

 

[Roughcut]

Slot drill for an engineering milling machine.

 

[sunnybob]

Bizarre, I've never owned a milling machine, and cant think of any way this could be in my box.
I've had the box 10 years, filled with odds and sodds, never cleaned it out until today.

 

[dickm]

Perhaps an old twist drill and a router cutter mated in that 10 year spell, and this was the offspring??

 

[sunnybob]

Perhaps an old twist drill and a router cutter mated in that 10 year spell, and this was the offspring??

oh, if only... then I would finally be as rich as I've always felt I should be.

 

[ardenwoodcraft]

I work in aerospace machining and we use slot / end mill cutters like this all the time. They are basically designed for use in CNC mill / router type machines and used for cutting metal and wood. The taper from the tip end to the base of the shank would indicate that this tool has been re-ground for a specific job.

There are several hundred videos on Youtube showing cnc routers using this type of tooling.

 

[sunnybob]

There are several hundred videos on Youtube showing cnc routers using this type of tooling.[/quote]

I bet there isnt one showing how it got into my tool box! :shock: :shock: :shock:

 

[ardenwoodcraft]

There are several hundred videos on Youtube showing cnc routers using this type of tooling.

I bet there isnt one showing how it got into my tool box! :shock: :shock: :shock:[/quote]


You could always make your own!! (hammer) #-o

 

[sunnybob]

now that would be a really short video.
Something on the lines of;
open drawer, turn drawer upside down on bench, pick up object, say "Wednesday, Thursday, Friday?"
video fades to credits.