add sheet metal folds

[themole]

good evening in attached ipt file of a sheet.I would like to add the folds on the four sides in correspondence of the shoulders.
In sketch I add the lines on which then apply the fold command but does not select them as ever?
I look forward to answers if possible.thanks

 

[cen82]

with the "fold" command executes it. but you have to do a sketch and consequently a "fold" for each piegha.in your case then 4 sketches and 4 "fold" commands

 

[Mec_1802]

hello to everyone, but maybe I'm wrong and I didn't understand what he had to do and I say a cabbage but don't do it before and easier with the "flangia" option? ?