And my advice,
sadly learnt and forgotten quite a few times, always after
drilling a critical part:
**** CLAMP THE JOB DOWN! ****
+1 on Steven's advice, having
learned this lesson the hard-way.
I'll second (third? nth?) that!
I was once told that the majority of accidents in industrial workshops over here
were caused by the drill press/pillar drill, not things like lathes and milling machines.
Simply because it was treated like a large electric drill, the workpiece wasn't
clamped,
the drill bit bit into the workpiece and it spun round out of control.
First rule of any machine (or even power) tool, make sure the workpiece is clamped.
-tony