A pendulum saw or swing saw is a mechanically powered circular saw with the blade mounted so it can swing into the material.
A swing saw is also sometimes called a cut-off trim saw in a mill for cutting right angle to the direction of the wood grain. A swing saw is a very dangerous tool, even with a blade guard. Early models were driven by a belt, usually made of leather, that was powered by a water mill or later a steam engine. Today the power source is an electric motor or a gas engine
A swing saw is used to get ice out of the river for the Harbin International Ice and Snow Sculpture Festival each year. The swing saws carve ice into blocks from the frozen surface of the Songhua River.
- AFP (13 November 2008). "Ice is money in China's coldest city". The Sydney Morning Herald. Retrieved 26 December 2009.
- osha.gov use of Swing Saw
- btsrr.com Model of a Swing Saw
- americanartifacts.com homemade Swing Saw
- flickr.com Swing Saw plans
- westernscalemodels.com Cut-Off Trim Saw model
- chestofbooks.com early Pendulum saw, not circular
- The Encyclopædia Britannica: a dictionary of arts, sciences, Volume 29, page 12 gbook, Pendulum saw