Z drift over consecutive prints, resets on printer reset
 
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Z drift over consecutive prints, resets on printer reset  

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Kaeltis
(@kaeltis)
New Member
Z drift over consecutive prints, resets on printer reset

I am using a i3 MK2S, I have been using it without problems for several months now, but now a problem appeared.

My Z height keeps going up with every consecutive print. For example, I factory reset the printer and update the firmware and run all calibrations.
Then I run the V2Calibration for Z offset, I set it to the correct height around -0.540mm to -0.640mm. Right after I run the V2Calibration again to check the height, but now the nozzle is around 0.100mm to high, so I dial it down. Again, right after that I run the V2 Calibration again to see if its now correct, but again it is around 0.100mm to high, so again I dial it down. And so on and so forth, this happens with every consecutive print.

But now, something important. When I had done this a couple of times, I powered off the Printer and turned it on again right away. I then tried to print something and the first layer was way to low, it made a nasty mark in my bed! Turns out the correct height is now around -0.540mm to -0.640mm again, just like the first time I calibrated it (I have actually always been using -0.540mm all the time I wasn't having that problem before).

Seems to me like the Z height rises around 0.100mm every consecutive print, until it gets powered down.
I don't know what caused the Problem (maybe a firmware update?) but I since have tried everything, different firmwares new and old, all sorts of factory resets. The Pinda Probe isn't loose and the Pinda temperature calibration doesn't help either.

tl;dr
I uploaded a video of my problem with explanation:

Napsal : 13/08/2017 7:35 pm
Anders
(@anders)
New Member
Re: Z drift over consecutive prints, resets on printer reset

I have the same problem. I have to keep adjusting the Z for each print attempt. Every time the print starts the ABS doesn't adhere to the bed so I have to keep lowering it time and again. By now the z-adjustment is over -1.2 mm and it keeps changing. I'm using OctoPrint, not sure if that has anything to do with it.

Napsal : 11/12/2017 9:24 pm
Andy
 Andy
(@andy-12)
Eminent Member
Re: Z drift over consecutive prints, resets on printer reset

From the video, the P.I.N.D.A probe looks a little to high. You might try going back through the manual Z-setup to get within 1mm of the nozzle.

Original Prusa I3 MK2s with 2.5 upgrade; Original Prusa I3 MK3s; Slic3rPE; FreeCAD

Napsal : 11/12/2017 9:35 pm
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