Question 900: Really puzzling

A X is a tool used for cutting arbitrary curves, such as stenciled designs or other custom shapes. It can be used in a more artistic fashion than other such similar tools, which typically cut in straight lines only. In this way, it is similar to the rasp and the chisel. Although a X can be used to cut arbitrary patterns, making a straight cut freehand is difficult even with a guide. Identify X.

Answer: Jigsaw