Curves can be placed on existing faces or separate from existing geometry (aligned to an axes plane). To draw a curve:
- Select the Freehand tool. The cursor will change to a pencil with a curve.
- Click and hold to place the starting point of your curve.
- Drag the cursor to draw.
- Release the mouse button to stop drawing.
- (optional) End your curve at point where you started drawing to draw a closed shape.