To create a three bend corner you can use corner seam or auto miter.
Inventor sheet metal corner seam.
You can change the values for an individual corner.
To specify an overlap that differs from the value specified select overlap type in the corner edit dialog box.
You can create a corner seam or rip an existing corner seam between sheet metal faces.
To create a three bend corner you can use corner seam or auto miter.
The corner edit dialog box lets you can specify an overlap type overlap gap relief type and relief size that differ from your sheet metal style or from the default value specified in the active sheet metal style.
The default settings for the sheet metal rule define the default values for the options.
On the ribbon click sheet metal tab modify panel corner seam.
You can create a corner seam or rip an existing corner seam between sheet metal faces.
About sheet metal parts.
An automatic corner feature occurs when you create two flange features using identical parameters on adjacent edges of a sheet metal face.
To specify an overlap gap select overlap gap.