As part of my offering plate project I am doing recess tenon, or expansion mode. When I resize the recess after drying , because it has turned into a football, I like to return the back before placing into the chuck again. Get some slippage because i do not want to use a point on what will be finished surface. I have tried bringing up the tailstock with a softtouch and getting this slip sometimes . Wondering if anyone has a better idea?

 

I see there is a reversing adapter on live center , 1x8 thread from Pennstate. Also Oneway makes a adapter 1 1/4 8 x 3/4 10 which screws onto the live center. The oneway will cost about 25 more but will be the same thread as my lathe so will not have to change insert.

The soap and water soak I’ve been experimenting with keeps the recess really close to a perfect circle