Re: [CAD_CAM_EDM_DRO] Wigglers and Tricks

In a message dated 10/9/00 11:42:11 AM Pacific Daylight Time, KM6VV@...
writes:

<< An optical center punch? is this to align the spindle or to punch the
intersection of scribed lines? >>

The optical center punch I have here is a block of metal with two bored
holes. Put a plastic rod in one hole. The plastic rod has a lens ground into
the top, and a cross hair and small circle drawn (printed?) on the lower end.
Peer into the rod and see the cross hairs centered over the intersection of
your scibed lines. Pull out the plastic rod, drop in the close fitting
center punch in that hole, whack with the hammer and there is your punch
mark right on the scibed lines. (If the body has not been allowed to slide
or move.)
Then have seen catalog drawings or photos of a device that is like a
periscope, Looks like a rod to fit your spindle and a telescope sticking out
the side at about a 45 degree angle. There are mirrors, prisims etc so you
are looking right down the spindle axis with aiming cross apparently on the
work. Remove the aiming tool replace with drill or cutter and go to work.
Again, accuracy is spoiled if anything moves while undergoing tool chage
bumping the wheels etc.
John Meacham