Sheet metal cylinder with bends - how to model?

A cylinder or truncated cone is very easily set in SW2014.
1 - Draw a sketch for the revolved boss.
2- Make a revolved boss on of 359.5 deg. a little to late to detail was not uniform.
3 - insert -> sheet metal -> bends. specify the edge of the cylinder gap. Click OK ! anything more you need not enter.
In the tree you will see a scan of your model of the cylinder.