to change the blade you need to use a 6mm hex key into the shaft on the motor side, there is a central access hole in the plastic cover or you can just take it off after removing the 2 phillips head screws.let the hex hey run fast against the steel cover plate, then you can loosen the nut on the spindle, its a contra nut, so its clockwise to loosen as you face it. just clamping the blade wont work as the blade will just turn on the spindle if its been on a while. took me two days to figure that out I was just about ready to take a large sledgehammer to it:incazzato:. checking the date from the last post I've got a feeling problem has probably been solved but who knows. Nick