I have a table saw with two stamped metal wings.
I found a cast iron table from an old saw at a garage sale for $3. Cleaned
up it should make a great wing.

Unfortunately it only has holes on three sides, and I need them on all four.
(Since both it an my saw are craftsman, I am hoping the other holes line up,
but better check before I do any new drilling...)

Any advice on drilling additional holes? I have an industrial drill and a
big pile of drill bits I got when a tool shop went out of business, but it
looks pretty thick. I know I have to keep oil on the surface, anything
else?