Hello All

i am busy building a hybrid cnc/ 3d printer , like this one [www.instructables.com].

i am having some problems with the axis controls through repetier, if i move the y axis forward then it moves, when i select y axis back it moves the z axis?

i am using a arduino mega 2560 r3 with a ramps 1.4 to control DQ542ma to run nema 23 motors,
i have disabled all end stops.

any help

thanks
Melvin