I think option 1 may give youa headache trying to get the solid revolve to interesect the way you want after the cut. If you revolved a surface, then offset for thickness, then cop the surfaces of the solid and intersected them back with the offsetsto create closed quilts...it will work. But similar to Option 2, (I explain below)....the walls will be constant. In other words, not what really happens during the mandrel bend.
Option 2 will work too...but if you are want to show the what happens in reality (re-flow of the material) you have to work inside and outside independently."Thicken" will only give you a constant wall.
I suggest working theinside and outside independently in surfaceto show the re-flow.
In Reply to Vaughn McDaniel:
How do you model a mandrel bend? As in attached image.
1. Solid cut + solid revolve
2. model as surfaces, then thicken
You got a better way?