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 aredesigned 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. Please note tool #'s LB10801C and LB86401C arecoated withElectro-Blu Non-Stick Coating Non-Melt Plastic Cutting Saw Blades produce super-clean cuts in 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) High Impact Polystyrene (HIPS) Low Density Polyethylene (LDPE) Lucite Mechanical / Engineered Plastics Nitrile Rubber Nylon Perspex Cast Acrylic Sheet Polyethylene (PE) Polyethylene Terephthalate (PET) Plastic Laminate Flooring Plexiglas Polycarbonate (Lexan) Polyethylene Terephthalate Glycol (PETG) Polypropylene (PP) Poly (methyl methacrylate) Solid Surfaces Styrene-Acrylonitrile Styrene-Butadiene Rubber (SBR) Styrene-Isoprene-Styrene (SIS) Teflon Trespa Meteon*** Thermoplastic Polyolefin (TPO) 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.