Masonry Chisel Defined

You probably already know this, but a masonry chisel is a metal stake which you hold so you can beat your knuckles with a hammer.  Particularly the base knuckles of thumb and index finger--the ones adjacent to the palm.

Every once in awhile I missed my hand and hit the chisel.

Another tip, agreeing to replace one ceramic tile that is in a field of tile, floor or wall, is something one should never ever do.

You think you are surgically extracting that thing.  Maybe so, until the slightest influence screws up the bordering tile.