Good hand placement is essential...
During my stainless drilling attempt, on an A frame plate...i had one hand on the drill and the other on the A frame...
...too much pressure on the drill, needless to say the drill bit broke...and then i managed to drill through my hand with the broken drill bit!...
...strangely enough the bleeding stopped quickly!, but a visit to A&E on a Saturday evening is not recommended...
no lasting damage, other than an ugly scar at base of my thumb...