Z AXIS PROBLEM I haven't printed anything for a month and when I started

3D Printing
, , ,
1

Z AXIS PROBLEM

I haven’t printed anything for a month and when I started printing again I noticed that my holes were eclipses. so when I moved my printer 200 mm up from its zero point in the z direction and I measured 17,6cm. I did not change any settings. the Z-motor doesn’t skip a beat.
I use a k8200 printer for almost 2 years and it is the first time I have this problem. I have to admit that I have a wobbly z axis (bought new parts for that, but hasn’t arrived yet ).
For the time being I will change the step/mm settings (try and error style).
But I really would like to now what the cause is of this problem, so I can prevent it in the future

2

There is a formula for calibration. Desired movement / Actual movement * Current step value

3

Clean and lubricate the Z guide rods, I have had the same problem after a months standstill and they did collect dust so the was too high friction.

4

This sounds like loose timing belts–they can stretch over time, so try to check their tension now and then. If that’s the problem, just tighten them up again

5

@Martin_Bondeus I think if there is to must friction the stepper motor would skip beats.
but mine doesn’t. with an induction motor the speed will be affected

6

@Ishaan_Gov my z axis (an threaded rod) is directly mounted to my steppen motor. so it can not be a lose timing belt.

7

@Bastiaan_Van_denabee Are you using the Wantai Nema17 motor that came with the K8200 printer?, How have you verified that it does not skip steps?

8

You can usually see/hear a stepper that is skipping steps and if there are dual you will see a difference in height.

9

My nema 17 motors doesn’t skip a step.

10

@Bastiaan_Van_denabee , sorry, I should have been more specific–the x as y axis timing belts