But a collet won't clamp unless you cut it apart...so all my nice work goes to the band saw.
In order for the collet to collapse, you have to cut your nice part you just made into pieces! But, as it is round, there is no way to hold it to cut it in the saw. So, I welded it to a square tube to hold it firmly in the saw for cutting. I welded it on the outer edge, where weld distortion won't affect the precision work of the inner OD and tapered surfaces.