Reply by TopamaxSurvivor

From the looks of the pics, if it went all the way around, it would disengage when it hit the 360 degree mark. There is a plus, you can’t squeeze your wood too tight ;-)

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence Wake Up America!! Please read; http://www.commondreams.org/view/2009/01/26-0