I have never used sheet metal in SW before so I know very little about it. I want to create cut out vents around a ring; so I created a form tool with the shape I want. When I apply the tool it cuts as expected but then adds material to the part under the part of the form tool that hangs over the edge. How do I get it to not add any material and retain the existing ring outline? Do I need to make the form tool match the part outline exactly? If so then I need to create a new form tool for each location?
The form tool.
The resulting cut with added material.