DCH wrote:
Greetings all...

I found an older Craftsman (1960's) radial arm saw a few days ago, ...
runs fine until you cut with it, once the blade gets into the cut it seems
to wobble, making a kerf much wider than it should

If the plane of the blade is not parallel to the line of motion, it'll
buck and
catch and cut a wide groove. Put a straight-edge across the blade
(guard
off and power unplugged, of course) and sight down onto the kerf. If
it's skew,
that's your problem. A single-LED flashlight can cast a useful shadow,
if you
don't like squinting and have an assistant on a ladder...

Loose bearings are also a possibility, but you can tell by just
wiggling the
blade.