i used this last night
i turned a fairly large platter (11.5") and couldnt turn off the tenon
i was discussing this with a friend and he said use a router bit in the drill press
i put a 5/8" bit in the drill bress and changed the belts to the fastest speed
i put a piece of lexan on the table to protect the surface of the piece you are working on
adjust the drill press down to remove less than 1/8" of material at a time
lock the quill and turn on the drill press and slowly move the piece into the bit to remove material
and i just would keep adjustinthe drill press quill down to remove all of the tenon and to even up the base of your project
cliff notes
remove a tenon by using a drill press as a bridgeprt milling machine
i can get pictures on my next one if anyone is interested