adding detail to existing solids

 From:  armin
3192.6 
Thanks for all your help, looks like I have to plan ahead and create enough curves upfront,
that's the tricky part :), just kidding.

Btw Brian, your suggestion looks interesting. Seems like you just added that extra curve,
and did a loft between the existing end curves of the cylinder. Though, doesn't that create
a second body? I have to try that.