MK 2.4S issues, Shifting layers and stepper oddness.  

RE: MK 2.4S issues, Shifting layers and stepper oddness.

With motor temperatures I will not help you much. Some motors are quite hot, but my Z axis motors are just a bit warm. Because Z is not changing so often, I belive it should not be so much loaded.

Layer shifting in both X and Y are strange. Take a look the the settings on the Sound / Voice setup (not sure how it is called in English menu). I keep the settings to the noisy, because changing to silence mode will reduce the power going through the motors. Then, especially when you overtighten the belts, can simply cause the layer shift.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

Normal mode is set, I do not have it in silent or auto mode for audio, its in a different room from me so noise level is not an issue.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

Still are you sure you did not overtighten the belts? If the printer is off, can you freely move the extruder and bed for the whole length without any obstacles in the path? Everybody checks the belts if they are not loose and skiping the teeth, but overtighten just makes the same issues. Motor is not able to move the exists and the result is identical.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

belts are not over tightened, no issues with movement with the printer off, it moves freely to the full extent of travel.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

Have you seen the exact moment, when the layer shifts? Maybe try to take a video, showing the progress of the print.

Layers shifts when something prevents the extruder to move. So in case that there is not an issue in the movement itself, I might be crashing to the object. 

Depending on the model you print, there might be some warping of corners or overhangs. Nozzle is hot, usually goes through it, but if PINDA crashes to the object, it might cause layer shift (or model to pop up from the bed).

RE: MK 2.4S issues, Shifting layers and stepper oddness.

I have not seen it do it, just catch it some time after, and no the Pinda is out of the way, nothing is in the path of the hot end, if it was that I would have resolved it by now. And no warping of corners or edges, its done it on Benchys and Dragons as well as something I designed for work, which is the main reason I am annoyed as I have to print out around 50 items and I cant seem to get my printer to do one correctly. the dragon was interesting, first the Y axis, a few layers later the X axis, then a few more layers and then the Y axis again.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

Have you sliced models yourselves or used any existing gcodes? Tried to reflash the firmware? Are you using up to date firmware? Did you changed it recently?

RE: MK 2.4S issues, Shifting layers and stepper oddness.

firmware is the latest as of a week ago, I have not tried an existing gcode, I could print another dragon from the SD card and see what that does.

RE: MK 2.4S issues, Shifting layers and stepper oddness.

@charles-g

Trying to print a different model, or even one of the sliced models provided on the SD card does help narrow down the problem to see if its a mechanical or a issue with the model.

Now to understand your Z motor issue.

You have Z motors 1 and 2 (Z1, Z2)

Z1 is the one getting hot (just as an example)

So you plug Z1 into Z2 port, plug Z2 into Z1 and then run them again.

Which motor is not getting hot? If it is now Z 2, it might be an issue with the board. If it is still Z1 that is getting hot, then it might be an issue with the motor itself.

For the skipping, did you take a close look at the rods to see if there are any grooves on both the X and Y rods?

If you could let us know the results of your alternate print and which Z motor is now hot after the witch.

Thanks

Shane

RE: MK 2.4S issues, Shifting layers and stepper oddness.

Ok, trying an alternate print, I did print the pre-sliced benchy included with the driver package and the dragon and both had no issues with layer shifting, so it could be an issue with the slicer? I have printed the same models I was having issue with on my Ender 5 Plus with no problems, and using Prusa Slicer for both, and cleaning and re-greasing the bearings of the MK2 I did not notice any scoring of the rods. I will try another print with a freshly sliced dragon to see. 

The motor issue, going by Z1 and Z2, swapping the connectors has not had affected the issue with the same right motor heating up and squealing, however I have replaced the motor thinking it was the issue but the issue remains, which makes me think its the driver on the mainboard, however I believe its a single driver powering both Z motors at the same time, could it be that its getting a little overloaded across both motors or that the right motor has a longer cable on it?