06-04-2014, 04:52 PM
Tricky... I'd be worried about taking teeth off the gears, have you tried unlocking the spindle, hex bar in the chuck, ring or other sturdy well-fitted spanner and a Really Big Hammer Swung Fast? Alternative to RBH, apply air hammer / SDS drill to the ring spanner to see whether repeated shocks will unstick it?
Rules are for the obedience of fools, and the guidance of wise men...
(Douglas Bader)
(Douglas Bader)