A nibbler uses a punch and die to make the cut, this is perfect for tight radius cuts into steel. The cutter can be set in 8 positions to make cutting easier. A .87 in. starter hole is all that is needed to start or start from the edge of the material. A nibbler is also what you need if you are cutting corrugated metal. The 6890 nibbler can cut 16 gauge steel and 18 gauge stainless. When perfect cuts are what you need, look to the Milwaukee line of nibblers.