Translations:SheetMetal Workbench/23/en

To add 1 back repeat the same operation by selecting the thickness of the concerned edge.

To reduce the space between the 2 edges, use "extends".

Select the thickness and specify the length to add.

Note that if the extension of the 1st edge is made before the fold of the return, it will not be taken into account, if 1 identical fold is added to the extension, it will appear correct but the unfolding will not be done.