For Cutting Fiberglass, Fiberglass PCB Board, Carbon Fiber, Carbon Fiber Reinforced Polymer (CFRP), Composites, Metal Matrix Compsoites (MMC), Micarta (Brand Name for Composites of Linen, Canvas, Paper, Fiberglass, Carbon Fiber or Other Fabric in a Thermosetting Plastic.), Thermoset Composites, Thermosetting Plastics, Used in the Boat and RV Industry to Trim Laminated Fiberglass Boards Cuts Fast and Clean