I sculpt in steel and wanted a jig-saw to cut and fashion sheet metal. a jig-saw is not the perfect tool for the job but the bosch, with the right bosch blades, makes awkward tasks easier. solidly built, it cuts through wood and thinner guage metal with acasual ease, and can handle curve cuts in 10-12 guage steel with only a little more effort.. A jigsaw is a versatile, electric or pneumatic handheld saw designed for cutting curves and complex shapes into a variety of materials. it uses a wide range of blades to make precision cuts in different materials including wood, plastic, ceramics, laminate, metal and more..