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For a thin sheet of plexiglass—that is, material up to about 3/16-inch thick—use a scoring method not dissimilar from a technique used to cut actual glass. Lay the sheet on a flat surface and ... Cutting, drilling, and sawing: Metal can be cut with a jeweler’s saw, tin snips, other cutting pliers, drilling attachments on flex shafts, disc cutters, or metal punches. Filing and sanding: After cutting metal, the edges should be filed with metal files and/or sanded with steel wool to remove sharp edges and dangerous burs left on the metal.