Piercing saw

A piercing saw is a tool that you can use to cut through different materials like metal or wood. It looks like a really skinny and long saw with really small teeth. You use it by holding the handle of the saw and carefully moving the blade up and down to make a cut. It's called a "piercing" saw because it's really good at making small, precise cuts, like when you want to make a hole in metal or cut a shape out of wood. So it's kind of like a super sharp and thin pair of scissors that can cut through some really tough stuff.