The tools employed are chisel, gouge and mallet.
She grimaced when he peeled back the final layer of bandages to reveal the gouge and broken bones beneath.
In mining, a "gouge" is the layer of soft rock or earth sometimes found in each side of a vein of coal or ore, which the miner can scoop out with his pick, and thus attack the vein more easily from the side.
"Gouge" is also used as the name of a bookbinder's tool, for impressing a curved line on the leather, and for the line so impressed.
The verb "to gouge" is used in the sense of scooping or forcing out.