I bought a bunch of Lennox bi-metal blades and really like em. The port-a-band I have didn't use to cut anything and now it goes through pipe and tubing like butter. I converted a Craftsman 14" wood bandsaw to cut metal, and only had one issue with the blade after the conversion. It was taking forever to go through a piece of 1/4 plate and I was starting to have a bad feeling about the blade. Turns out I installed the blade with the teeth facing the wrong way. Still made it about 4 inches into the piece with the teeth pointing up instead of down. After I flipped it around, took about 20 seconds to finish the other 4 inches and has worked great since.