In article , Fred says...

disintegrated. So what is the right tool/method just to widen those holes on
one side?

A bridgeport and a small 1/4 inch end mill.

Either that or you need some of those bolts with the built-in
offset. :^)

If you are really, really desperate and need to do this with
a drill press, you can take another small piece of steel
plate, and drill a quarter inch hole somewhere in it. Then
clamp that existing plate and over where you want your
correct hole location to be in your workpiece. Thus forming
a crude drill jig.

Drill down through the jig and *slowly* nibble into the
side of the 'bad location' hole. The upper plate will take
the side load.

To prevent the problem from happening again, centerpunch your
hole locations in the original plate. Then pick up the punch
marks with a pilot drill and start each one.

Now's the time to go and inspect to see that the started hole
is DNO the cross hairs of your marks. If not, it's a lot
easier to 'drift' the hole at this point. Only when your're
satisfied do you drill up to the finish size.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================