Lofted Surface 
Ruled Surface 
Use Ruled Surface, rather than
Extend Surface to maintain the
correct taper.
Extend Surface 
To facilitate Trim Surface.
Trim Surface 
,
using Mutual
to remove material adjacent
to the horizontal ruled surface.
Knit Surface
after trim.
Create a plane, parallel to Top
Plane.
Sketch rectangle to create a
planar surface.
Planar Surface 
Trim Surface ,
using Standard
to trim below the planar surface.
After trim, the planar surface is ready
as the basis for tooling split operation.
