Chisel
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A chisel is a hand tool with a characteristic wedge-shaped cutting edge on the end of its blade. A chisel is useful for carving or cutting a hard material such as wood, stone, or metal.
Neolithic stone chisels from Schleswig-Holstein, Germany around 4100 to 2700 BCE
A selection of modern wood chisels
A sharp wood chisel in combination with a forstner wood drill bit is used to form this mortise for a half-lap joint in a timber frame.
Woodturning with a long handled chisel
Jackhammer
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A jackhammer is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. Hand-held jack
Chisel
…heavy, with a relatively dull head that wedges and breaks, rather than cuts. Often used as a demolition tool, they may be mounted on a hammer drill, jackhammer, or hammered manually, usually with a heavy hammer of three pounds or more. These chisels normally have an SDS, SDS-MAX, or 1-1/8" Hex connection. Types…
A pneumatic jackhammer
A gasoline-powered breaker on a demolition site
A compressor for running a pneumatic jackhammer
A single-phase demolition breaker