Z axis issues

[Neil]

Ok I have my i3 pro b now printing....sort of.
My main issue is I keep getting intermitant binding on the left side lead screw, some.time it happens and some times it's fine.
I have checked everything mechanically multiple times and i can't find a physical reason for this to happen.
Could it be I need to up the power of the stepper motors to cope with the weight of the extruder carriage or could it be some thing else?

[William]

1.You should adjust the level of X-axis right and left is same
2.Add lubricating oil
3.Increase the voltage of A4988
（Turn the top adjustable resistance screw）

A4988测量方法.png (132.58 KiB) Viewed 12557 times

[Neil]

Thank you for the reply.
Just a quick follow up question. Is there an optimum power setting for the motors and is it possible to set it too high?

[Neil]

Well I've finally taken the infernal thing apart and found that not only are the threads on the brass T nuts badly cut but the lead screws are massively out of tolerance to the point where I can't even recut the threads with a die cutter because they are so large.
Off to the hardware store tomorrow for more threaded rod .
Not impressed with quality control

[William]

Have you tried to contact the related sales for sending you the new parts?

[algernon]

Hi, since the instalation of the new version RepetierHost_2_1_3, I have Z engines that slam and jump steps with slicer Cura and it goes well with SLIC3r (printer geeetech I3 M201)

I contacted repeater facebook, here is their answer:
Adjust z jerk, acceleration and max z speed in firmware to values that work for your printer. I guess cura has no limit and relies on firmware to adjust to limits.

How do we do that ? on I3 M201 not having an open source card

[_kaktus_]

Hello.


If you want to contact me on PM.
I can try to reconstruct your situation.

How fast do you print

[William]

You can check it on "control">"Motion".
Then you can calibration

[algernon]

Thank you both, I sent a message to kaktus