Fence post spike adapter

Made adapter to fit a spike into a fence post. The first photo shows what I'm replacing. The second the 2 printed parts, the 3rd the parts in position on the spike and the 4th shows the final product installed.

In case you're wondering ... the spike is part of a device that is a motion detector combined with a water sprinkler. I use it to keep the blackbirds away from my pool because otherwise they deposit their babie's droppings quite insistently in the pool.

I've seen similar spikes on solar yard lamps ... would probably work with some adjustments to the parts which is why I've included the OpenSCAD 3d code.