From FreeCAD Documentation
- We need now to duplicate this beam a couple of times. We could do that one by one using the clone tool, but there is a better way, to do all the copies at once using an array:
- Select the beam
- Press the Draft OrthoArray button
- Set the Number of elements for the X direction of the array to 6, set the number for the Y and Z direction to 1, and press OK.
- Expand the interval X property of the array, and press the small expression icon at the right side of the X field. This will open an expressions editor: