In article ,
(Arch) wrote:

I'm wondering about making a simple device for holding blanks with
adjustable and repeatable eccentricity. Consider cutting a 2 in. length
of 4 in. diameter steel or aluminum bar into two halves at an angle like
a large set of wobble washers used in cutting dados. One half to be a
faceplate with an angled face. The other half to hold the blank as a
rotatable faceplate ring.

Interesting... certainly seems to be workable to me. The next step would
be to figure out how to connect the two angled faces and also have the
tailstock end one rotatable around a center axis. The connection would
also have to be pretty secure once you get the wood out on the end
whipping around.