A welding question .
I'm building a crane for the back of my truck, it is going to have a manual slew using a worm and wheel from an old reduction box . I'm turning the inside of the wheel out at the moment to fit the mild steel round pipe that makes up the post. I'm going to have to attach the cast iron wheel to the mild steel post somehow. There isn't really enough material left for a steel band and a bolted connection.
I can get it brazed on at considerable expense but is there a more normal and modern method around now ?