Ok....deburring while somewhat non-hazardous while using files, sandpaper, and scotchbright, it can be somewhat hazardous when using a "scotchbright wheel" on the bench grinder! I found that out first hand....or should I say first thumb. The small part I was using the wheel on slipped and my thumb was slammed into the wheel....it hurt a LOT!!! Took over a week to heal to the point where I could grasp anything with that thumb.
My uncle use to call stuff like that..."it is the trade sinking in!" Well it sure sunk in good.