In the Rhino WIP several new enhancements and additions have been made to create a PushPull workflow. The new enhancements ease the manipulation of solids without needing to trim or split as well as working in perspective views.
Ortho Z Snap
Ortho mode has been expanded to also allow snapping to the Z direction of the current construction plane.
Gumball Closed Extrude
Extruding closed curves with the gumball can now create closed solids by selecting the filled portion of the extrude control on the gumball. When the open portion is selected an open extrusion is created.
Auto Align CPlane
When the Auto CPlane button on the status bar is enabled the CPlane automatically orients the itself to the selection.
The new PushPull command simplifies splitting and extruding a face. Any curve lying on a face automatically splits the face and the new extrusion is created from the region. Multiple regions can be selected and unioned on the face if they exist.
PushPull also allows extension of planar faces which preserves the direction of surrounding faces.
The existing inset command has been expanded to also work with faces of polysurfaces. The command now offsets the inner and outer boundaries of a face along the surface.
A more detailed look at how these tools can be used can be found in the following introductory video.
Let us know what you think!