Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A once-a-year tool

Use the masonry blade if you've got one 4x4 tile to cut or trim. Use the grinding/metal cutting blade if you've got paper thin metal to cut or trim. Otherwise it's a trip back to the hardware store for either a replacement or something much more robust. My first one ended with the arbor lock breaking and the blade permenantly affixed. Also, the gear mechanism is so cheesy it stripped out and now there's no torque on the blade. I went back for a second zip mate (maybe the first was just a dud?) and the second has done the same as the first (stripped out gears). But don't think I was out cutting brick or concrete with this thing. It was all light duty work. When cutting masonry the blade makes its way through the material on its own. You don't force it. But this item can't even keep pace with what it was designed to do. If I find something more sturdy I'll let you know.