If you are looking for a little more capacity from your corner notcher, try the SN-F04-MS sheet metal corner notcher from Baileigh Industrial.
The SN-F04-MS is the great for making perfect corners in metal that are impossible with hand tools. This corner notcher has a 6mm mild steel capacity, so it can make quick work of most any job. The SN-F04-MS corner notcher has blades that are fixed at 90°, ensuring a perfect notch every time. A 650mm x 650mm oversized working table includes table guides, for even more accuracy.
The SN-F04-MS sheet metal notcher has 215mm long blades that can be flipped and resharpened many times for even more life and cost savings. The blades are also negatively raked to pull the material to the stops during the cut, for the most accuracy available. The SN-F04-MS sheet metal notcher comes with a powerful 400 volt, 50hz, three phase motor for years of notching. With an operator controlled foot pedal, the SN-F04-MS is capable of 15 strokes per minute.