The tools for designing sheet metal parts are in a recently added workspace the sheet metal workspace.
How to add sheet metal feature to fusion 360.
Fusion 360 has released the sheet metal modeling environment.
But fusion 360 doesn t just integrate the process from design to flat pattern.
Traditional cad tools only take your sheet metal design from concept to dxf without integrating an expensive 3rd party add in.
Fusion 360 is the only tool to integrate design to manufacture.
Link to vote for improved sheet metal tools in fusion.
Create a base flange.
I have not found a method of converting a sheet metal body to a sheet metal component capable of being edited in the fusion 360 sheet metal environment.
To access the sheet metal workspace simply click the workspace button in the upper left corner of the window.
The goal is to create an actual physical product.
The only work around is to delete the flange feature from the timeline and recreate it.