Kyle_in_Tex
Super Star Member
how?. I've worked for a defense contractor for years making parts for jet fighters and helicopters, using all kinds of machines, and that was NEVER done.. the only way possible to do that on a lathe is VERY unconventional, you'd need to lock up the chuck, either by tying the brake on with a rope, or make a jig for that, and drill the ends of the shaft for a live center, and make it tight against the shaft, and make a special bit with the exact width needed, and use the power feed to essentially scrape the steel horizontally a little at a time. and I don't see the shaft drilled for a live center..
Put the endmill in the chuck to spin. Mount the shaft in your toolholder.