ORIGINAL: coralcape

My warning about using a stud comes from experience. I find that the threads in a aluminum adapter tend to wallow out over time, this doesn't happen with a steel stud. I feel that the clamp type of adapter is the best. I usually cut the whole thing as a unit and drill the clamp holes before I separate it. I find this type of adapter won't come loose on the crank, as a screw on might. As to run out, I use a four jaw chuck and set this up with no run out before I do any cutting. Good luck, red