How do I reduce mechanical looses on the z axis? i've tightened all the screws (I think so). I'm attaching a film to show the problem.
You need to adjust the screw on the anti-backlash nut to remove the slop. Problem is, its something that really should be done during the assembly stage as its not easy (maybe impossible) to get at while the Z axis is mounted.
Thank you! Do you have an idea what's the best (the least invasive) way to get to it. Which parts i have to remove?
Assuming you fitted the anti-backlash nut with the adjustment screw on top, remove the motor and top C beam cover plate, you should see the backlash nut. Lower the C beam as far as possible to get better access. The challenge for you is getting a spanner on the nut and an allen key on the adjuster. It's best to remove the router because of the weight,prior to adjusting.
Yes, another good point Peter. That can be checked by lifting the Z C-beam from the bottom and checking for movement but you will get some movement from the motor coupling compressing so don't count that!
No you shouldnt? There must be stop collars on both ends. One would never rely on a flex coupling to apply force axially
So, I've checked the stop collars- they sit tight. I got to the anti-backlash nut (see photo) what do I do next? How should I regulate it?
I've tightened the nuts There's a slight improveent, but I think it moves not only up and down but also back and forth (video)
Didn't make myself clear. What I meant was, if there is movement up and down don't look at the coupling, look at the stop collars because if they do have play, it will show in the coupling.
