This multi-axis turning thing is VERY DIFFERENT from single axis
turning.

You're always turning in or immediately next to "shadow areas" which
means

1. you can't see ALL the affects of what you're doing at any given
moment

2. because areas adjacent to where you're workingare "shadows"
your normal method for cutting beads, coves, etc., may cause
the end away from where the cutting edges is cutting to catch
or take out something you wanted to keep

3. "blending" a shape turned on one axis to another shape turned on
a different axis can be an exercise in futility - or a pleasant
surprise

And if you go with intersecting arcs rather than turning to a circular
cross section

1. you have to deal with edges where arcs intersect which means
a) the desired edge changes location is a function of TWO cuts
made on TWO axis so to move an edge 1/8th inch, you have
to remove 1/16th inch on each of the two arcs
b) it's tricky to create a straight edge where the two arcs
intersect because even a minor miscut (too deep or too
shallow) - on either arc cut - is obvious

Should you introduce a quarter twist by placing the centers on one
end 90 degrees relative to the other end

2. you have all the fun and games of (1) above - compounded because
the edge created by the intersecting arcs is twisted. This
requires
some interesting mental gymnaistics - with the accompanying
risk of "pulling something" - and there ain't no brain
chiropractors
though a warm compress, applied to the forehead (or in my case
a 6 or 7 head) does help with brain cramps.

Anyhow - here are two pics of my budding odd little forest.

Fun this woodworking thing - turning being the funnest - most of
the time.

charlie b