Then why first post:
There are a few different ways to make an octagonal pad, although your pad does not look octagonal at all, but a solid zone with just an octagonal cutout in the solder mask layer.
In KiCad it is very common to make complicated pads out of overlapping pads. Have a look for example at the Footprints for IC’s with thermal pads under them. When doing it this way, you can use a rectangular SMD pad for the center part and 2 trapezoidal pads for the top and bottom.
Or 4 rectangular pads on the same location, but rotated 45 degrees each time.
A more involved way is to draw our shape into an external application, import it in kicad as a dxf (or .svg) and make a custom pad out of it.e
You can also do it directly with the “Custom Shape Primitives” although the procedure is not very user friendly. It sort of works like:
- Open Footprint editor, create new footprint (in a library)
- Place / Place Pad, and place a random pad on the canvas.
- Hover the mouse cursor over the pad and press e for edit.
- Set the “Pad Type” to SMD, and “Shape” to: “Custom( Rect. Anchor)”
- On the Tab: “Custom Shape Primitives” → Add Primitivy → Polygon.
*Click on the + a few times until you have 8 corners.
Then enter coordinates something like:
