Extension Pole to Unger Tool Adapter

This is based on "Adapter Teleskopstab / Teleskopstange mit Schraubgewinde an Unger OptiLoc Anschluss (Werkzeuge zur Fensterreinigung / Window cleaning tools)" by djtifosi, who made an excellent simple mechanism for attaching an adapter to certain tools that have an oval hole. You will need to print the little screw and button files from the original Thing: https://www.thingiverse.com/thing:4411517, and supply your own spring (just about any little spring you have around will work, or you can get one at a hardware store).

I have an Ace Hardware extension pole - unfortunately the threads are different than the adapter djtifosi designed, but I was able to use the threaded part from "Two Pin Brush to Standard Paint Pole Adapter" by natdog1984, https://www.thingiverse.com/thing:4063946, and it works perfectly.

I combined the ends of those two designs in Tinkercad. You can make further edits to the design: https://www.tinkercad.com/things/l6CaSOMLdHP.