Hi Guys,

I bought one of these Chinese CNC Routers a year or so ago and it has been running well until recently.
The Y Axis stepper stated loosing steps and now it stalls, but only in one direction of travel.
I pulled the ball screw out and turning it by hand, its feel free in one direction, but it binds in the other.
I use dry lube on the balls screw and guide rails, but I have not pulled the ball screw nut off.
If had the occasional 'crash' so I can only assume that that is the reason for this problem.( time to fit limit switches, I think....)
Has anyone seen this problem before? Can it be fixed or is it just easier to replace the complete ball screw?
There does not appear to be any defects on the screw itself, by the naked eye. Maybe I have done internal damage to the nut....dunno.

Regards
Steve

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