On the Geometry View of the ONT add a workpiece using the WCS as the parent. Edit the workpiece and use the Solid as the Part geometry. You can add the blank here if you want to. Then when you edit the Turn_Workpiece the part boundary will already be there, almost like magic. If you already have a turn workpiece you can delete any existing boundary and then drag and drop the object onto the Workpiece to inherit the boundary.
John Joyce
Tata Technologies iKS
1675 Larimer St.
Denver, CO