Re: [CAD_CAM_EDM_DRO] Allen head

for aluminum you could sharpen the face of an
allen wrench and use it as a broach
rough drill the head to 2.5mm and a bit deeper than the hex depth
to leave some room to push the chip into and use a press to drive
the broach to depth

if youve got a lot of them to run you can find rotary broaching
holders and bits at http://www.slatertools.com/

Brian

On Sunday 02 December 2001 19:28, you wrote:
> Is there a tool that will allow me to add a 2.5mm hex into the head of
> some aluminum 3mm socket head screws?
>
> I tried using a .020" endmill. It worked ok until I broke it by going
> to deep.
>
> Mike