Makita's T-Shank Jigsaw blades for Fast Cutting on Metal and Aluminum are ideal for metalworkers or metal fabricators. For the most accurate cuts and maximal blade longevity, consider ensuring that the metal is fastened and secured, applying a firm slight forward pressure on the Jigsaw tool and allowing the blade to do the cutting. Ensure that proper lubrication is used to maximize blade life and lower temperatures. Slower operating cutting speeds and non-orbital action for precision and the reduced risk of jamming, excessive heat buildup and premature blade wear.