Re: axis movement jamming
I think you need to find if it is 'jamming', or is it the stepper motors playing up ?
First thing I would do is remove the stepper motors and turn everything by hand to try and see where the problem lies, you might then want to strip it down in a particular area anything you suspect has siezed or failed in some way. Upon reassembly you should check that everything is in line and square to each other, lubricate in accordance with manufacturer guidance. If it's still not right it's time to investigate the stepper motors, drivers and electrics.
Re: axis movement jamming
i cant remove the motors as they are built into the body. but the grinding sounds seems to be coming from the rails in the x and y axis mainly. the z axis runs smoothly but at slightly grinds at one place? the machine is pretty solid built and frame is perfectly aligned and level
what could i also attempt to finding out problem?
Re: axis movement jamming
If it's all aligned as you say the problem sounds like bearings, maybe lack of lubrication has contributed to it.