See Man Box, Episode 22, @ 27:50
RULE #1 - Never put your hand (or any other body part you don't want to loose) in front of a sharp tool.
** Flag on the play! Rob uses a sharp plane blade to score the drawer back workpiece with his hand directly in front of the line of force, not to mention in very close proximity and in a slightly awkward position. One of those " hold my beer and watch this " operations.
Carry on.
Larry