2 Negative Hook Modified Triple Chip (MTC) GrindWhen cutting acrylics such as Plexiglas, polycarbonates such as Lexan and other plastics, chip-weldinga melting of the materialis a concern. But not with these carbide tipped no melt saw blades. The modified triple-chip grind and 2 negative hook angle produces less heat than a standard blade, leaving a crisp, smooth edge. No melt saw blades are designed with a negative hook angle, which greatlyreduces the tendency of chip-welding or melting of Acrylic Sheets, Plexiglas, Lexan, Corrugated Polypropolyene, HDPE, Polycarbonates, Coroplast* and other Plastics.Designed to cut the following materials: Plastic Acrylonitrile Butadiene Styrene (ABS) Acetal Acrylic Alupanel Copolymer Coroplast* Corrugated Polypropolyene Correx Boards Delrin Ethylene-Vinyl Acetate Foam Board Gatorfoam** High Density Polyethylene (HDPE) Lucite Mechanical / Engineered Plastics Nitrile Rubber Nylon Polyethylene (PE) Polyethylene Terephthalate (PET) Plastic Laminate Flooring Plexiglas Polycarbonate (Lexan) Polypropylene (PP) Poly (methyl methacrylate) Solid Surfaces Styrene-Acrylonitrile Styrene-Butadiene Rubber (SBR) Styrene-Isoprene-Styrene (SIS) Teflon Trespa Meteon*** Ultra High Molecular Weight Polyethylene (UHMW) Wood* Coroplast is soft plastic cardboard made with super soft, super flexible PVC. ** Gatorfoam Foam Board, a polystyrene foam board bonded between two layers of Luxcell wood-fiber veneer. ***Decorative high-pressure compact laminate (HPL) with an integral surface. Safety Guidelines for Saw Blades.