I'm making a custom tap handle out of something that means something to me: an old beat-up joystick I used to play games in high school. I'm planning on sanding it down and spraying it with spray paint and a finisher. Maybe in glossy black.
My problem is that I need to find a good way to get a thread for the bolt on the tap. Check out these pictures. It's a little smaller than the bolt. My wife suggested using some sort of compound to fill a thread in the space. I'd prefer it to be removable. What ideas do you guys have?