Re: [CAD_CAM_EDM_DRO] Wigglers and Tricks

>
> Hi,
>
> Model Engineer in the UK ran an article earlier this year about making such
> a device. It mounted in the spindle of a miller or the tail-stock of a lathe
> and could pick up a point or an edge with very high accuracy. If I can find
> the magazine I'll post where a copy can be found. This is the only one I
> kept back from Bill:-)
>
> Regards,
>
> Terry
>
> > Joe,
> >
> > An optical center punch? is this to align the spindle or to punch the
> > intersection of scribed lines? I started to think there was a
> > "periscope" type device that chucked up in the collet, and "peered" down
> > at the work, giving some sort of alignment gradicule. I wonder if
> > something like that would be practical? I have a "bomb site" for an old
> > HP 7475, etc. plotter; if one could add a mirror at 45deg., and mount
> > the whole thing, it might be useful.
> >
> > Maybe the ball end wigglers find the center of a drilled/bored hole? I
> > finally saw/read up on the "tophat" (?) centerfinder in Rudy's
> > tapes/books (I can't remember which).
> >
> > I saw OMW's "Center Test Wobbler" (for lathe) at the P.R.I.M.E. show,
> > but at $30 plus shipping, I thought I might make one, when I need it. I
> > still wonder if the long needle is bent a little, will it still be
> > accurate? I examined one on the table, and it didn't seem to be true.
> > Maybe it doesn't matter?
> >
> > Alan