With steel-rule construction, a Bigz die cleanly cuts thick materials, including cardstock, chipboard, fabric, foam, magnet, leather, metallic foil, paper and sandpaper. Sizzix Bigz Dies are excellent at cutting a variety of materials. With steel-rule construction, a Bigz die cleanly cuts thick materials, including cardstock, chipboard, fabric, foam, magnet, leather, metallic foil, paper and sandpaper. Die-cutting machines must only be operated by users aged 14+.