The pictures were very helpful.  I am now on the prowl for a nice chunk of hardwood, ie. maple, oak, hickory (Broken baseball bat! :biggrin: ).  After lathing the grooves, I am thinking that boring the end, insert a metal arbor and then epoxying it in place.  That will solve the wood in a chuck problem.   
Great Thread! 
Duh! just re-looked at the pic.'s and noted that one has a metal base.