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Rotation Sweep

In one sentence: Sweeps one or more profiles around a centre point (not a fixed axis), creating surfaces like turbine blades or propeller forms.

Third-party addon — installation required

The Curves workbench is not included in FreeCAD. Install it via Tools → Addon Manager → search "Curves" → Install and restart FreeCAD.

Overview

Workbench: Curves
Menu: Surfaces → Rotation Sweep
Command: Curves_RotationSweep

Unlike Part Revolve which rotates around a fixed axis, Rotation Sweep allows the centre point to be anywhere in space, producing swept surfaces with varying radius.

See also