Yeah, its rated for 1/4" at 3"/min. It does a VERY good job. I sliced thru some thick tractor trailer aluminum intercooler piping, and it was like butter. It supposedly will do up to 1/16" aluminum, clean, but this stuff was thick, and it was a very clean cut. If you're in the market for something to do sheet metal, or even light frame work (Subaru undercarriges come to mind..) I would highly recommend buying one of these. Its not really as big as i needed, but it weighs 20 pounds, and only draws 12 amps. You can lug it out in the driveway, and run a good extension cord, and it will work. no air lines to mess with.... Im going to do some more thickness testing, but I think it does better than they say...