Curve Drawing Tools:

• Bezier, NURBS, PolyCurve are base curve drawing tools.
• The Circle tool creates a circle according to the procedure for creating primitives in Modeler:
  • If faces are selected, then the primitive will be ceated in the center of the selection.
  • If the Construction Plane is active, then the primitive will be transformed accordingly.

Editing Tools:

• The FixCurves tool converts NURBS and Bezier curves to nice uniform polygonal curves. It can also improve polygonal curves (open oplygons).
• Sweep builds a surface by extruding a profile along a curve, if two nodes are selected. If one node is active, then the node will add thickness to curve.
• Skin builds a loft from selected curves.
• Revolve builds a surface by revolving a profile along a given axis.
• Hose is intended for fast creation of wires, hoses, etc.
• FromEdges created curves from selected edges.
• Edit Curve starts Curve state in edit mode to edit existing curves.

How to Make Polygonal Sweep

https://youtu.be/Nr_GRXw3qI8