Re: [CAD_CAM_EDM_DRO] Locating already drilled holes

>
> 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@...>
> 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).