Use TPI bi-metal blades. For thicker metals such as steel pipe, angle irons, or tubing, use TPI bi-metal blades. For aluminum, an 8-10 TPI blade is best. As far as the best brand of metal cutting blade, we like MK Morse . If you are cutting cast iron, stainless steel, and high-strength alloys, or for jobs like auto dismantling and ...
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