Chisel

In industrial use, a hydraulic ram or falling weight ('trip hammer') may be used to drive a chisel into the material.

A gouge is a type of chisel that serves to carve small pieces from the material; particularly in woodworking, woodturning and sculpture.

One of the largest types of chisel is the slick, used in timber frame construction and wooden shipbuilding.

A cold chisel is a tool made of tempered steel used for cutting 'cold' metals,[2] meaning that they are not used in conjunction with heating torches, forges, etc.

Cold chisels are forged to shape and hardened and tempered (to a blue colour) at the cutting edge.

The round nose chisel is used for cutting semi-circular grooves for oil ways in bearings.

Although the vast majority of cold chisels are made of steel, a few are manufactured from beryllium copper, for use in special situations where non-sparking tools are required.

Cold chisels are predominantly used in Repoussé and chasing processes for the fabrication of bronze and aluminium sculptures.

Masonry chisels are typically heavy, with a relatively dull head that wedges and breaks, rather than cuts.

The direction of the taper in the blade determines if the chisel cuts deep or runs shallow along the joint.

A modern gouge is similar to a chisel except its blade edge is not flat, but instead is curved or angled in cross-section.

The modern version is generally hafted inline, the blade and handle typically having the same long axis.

The blade geometry is defined by a semi-standardized numbering system that varies by manufacturer and country of origin.