The dvd shows using a hardwood shaft and hammering on that against the lip to do the forming in tighter spots like this where swinging the hammer is hard.
How to make a hole flange in sheet metal.
To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.
Add a flange to a sheet metal face using multiple edges.
Create sheet metal flange with offset width create a flange and define its width as an offset.
The piece on top with the slightly larger hole allows you to get a crisp edge without distortion of the rest of the piece.
Once you understand how to combine the flange and extrude tool your flanges will update automatically.
In general a minimum bend relief is equal to the material thickness plus the inside bend radius.
Create sheet metal flange with specified width create a flange in sheet metal and specify the width of the flange.
This video is part of our series on solid edge sheet metal.
This will help you get the most from a powerful technique to quickly create a variety of flanges with differing styles.
Create flange with from to selections in sheet metal create a flange and define its width with from to selections.