how do you keep [your electric screwdriver] from either cracking the plate (or dimpling it if it's nylon)?
Okay, I'll share my secret.
I hold the driver loosely. When the screw tensions, the driver twists slightly in my hand.
My B&D driver is straight (unless I put it into the angle bend position).
It's not perfect, but I think it saves time and wrist action.
Not to mention scratching the plate or shredding the paint off the screw when the flat tip slips...
They don't require that much pressure. It hasn't been a problem. I don't recall damaging any.
I would use a manual driver too if I had three hands.
Like you, I usually control the tip with my other hand. It is a natural motion from holding the screw to start.
[This message has been edited by Dspark (edited 05-10-2001).]