The limiting factor of a jigsaw is its blades. This handheld saw can be used to cut metal or wood simply by changing the blade. Since the blade is small and thin, it is extremely easy to accidentally bend or snap a blade. The vibrating movement of a jigsaw can be difficult to control for inexperienced users and that can result in damage to the project material or the blade. The best way to ensure efficient cutting is to apply light forward pressure so that they blade always has adequate time to cut.