Chuck stuck on spindle....Help

[krv3000]

hi just a thort did you set the lathe a way with the chuck on ? if you did the chuck has locked it self on as the chuck was not tightened on to the spindle when you set the lathe ruining the lag between the spindle rotating and the chuck being stationery will force the chuck to tighten More than it shod 1 way to try and get it off mack up a plate say off 13mm plate with the same pcd spacing for the chuck fixing screws welled a long Peace of box or pipe to the plate and with the aide of a Friend while sum one is applying leverage on the pipe to undo the back plate sum one hits the fixing plate with a big hammer this shod have the effect of a impact gun that you wood use to undo stubborn bolts