Re: Locating already drilled holes

--- Ian,
bits of razor blades and old WD optics? Tell me you still ride your
bike to mill with your egg sandwiches in a gasmask bag. I can rember
the days when us Brits did not have the proverbial pot but things
have
changed - at least down south.
Terry Ackland
In CAD_CAM_EDM_DRO@egroups.com, "Ian Wright" <Ian@i...> wrote:

> HI,
>
> My method would be to turn a small length of bar stack to the hole

diameter

> and, at the same setting, turn the end to an accurate point (you

can
leave a

> shoulder between hole diameter and point if you wish to stop it

falling

> through) then set up to this point. If I want real accuracy here I

set

> another true point in place of the tool and just nip an old razor

blade

> between the two points - you can soon see if they line up, even a

thou

> either way will make the blade tip at an alarming angle! This is

also the

> best way of setting a lathe tailstock in line with the headstock.
>
> Ian
> --
> Ian W. Wright
> Sheffield UK
> ----- Original Message -----
> From: <ballendo@y...>
> To: <CAD_CAM_EDM_DRO@egroups.com>
>
>
> > Someone asked how to find the center of an already existing hole?
> >
> > If the hole is small enough, you can use the pointy end of an
> > edge/center finder in the way described in my earlier post(with

punch

> > marks).