"Arch" wrote: (clip) Won't work? Too risky? Why
bother? Well, my Harbor Freight auto tail pipe expander does fine as an
expansion 'pin' chuck, but somehow I don't seem to use it.
^^^^^^^^^^^^^^^^
Sounds like it will work. Too risky? OMHO, very risky. If I have it
properly visualized, you are going to have a dumb bell spinning like a
propeller while you work. One little lapse and.... Arch, you are a
retired physician, so you know that people OUR age can get pneumonia and die
just from lying in a hospital bed.

But let's take this discussion back to some of your earlier musings. It
seems to me that when you are driven by the prospects and possibilities of a
mechanical technique, you are doing CRAFT. When you have an esthetic goal,
and the mechanics is simply a means to achieve that goal, you are doing ART.