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The compass, or keyhole, saw bears a narrow, tapered blade in order for it to fit into narrow spaces. Some types come with three or four alternative blades that can be replaced to meet the demands of the particular cut: there could be ripsaw blades and blades for crosscut work. Due to its flexibility, the compass saw is especially useful for cutting along curved lines. This saw is also frequently used for short cuts, or to finish off a long cut and for fine irregular sawing.